Lake Buena Vista, Florida (CNN) Alligator warning signs will be put up near all the waterways at Walt Disney World resorts following the death of a 2-year-old boy who was dragged into a lagoon two nights ago, a senior source at Disney told CNN on Thursday. 
 
 The move will happen as soon as possible, the source said. 
 
 Earlier, a spokeswoman for the popular tourist destination in Lake Buena Vista, Florida, said officials were reviewing the placement and wording of warning signs. 
 
 "We are conducting a swift and thorough review of all of our processes and protocols," Walt Disney World Resort Vice President Jacquee Wahler said in a statement Thursday. "This includes the number, placement and wording of our signage and warnings." 
 
 The Graves family was at a movie night outdoors Tuesday night at the Grand Floridian resort when the boy waded into about a foot of water in Seven Seas Lagoon, authorities have said. Witnesses, including the boy's horrified parents, tried to save him as a gator dragged him underwater, witnesses told authorities. 
 
 Search crews combed the water for hours before they found the toddler's body. 
 
 There are "No Swimming" signs at the lagoon, but there are no warning signs about alligators. 
 
 All the beaches at the resorts at Walt Disney World remain closed. 
 
 There are "no swimming" signs outside Disney's Grand Floridian resort. 
 
 Some had questioned whether signs specifically warning of alligators should have been placed at the luxury property. 
 
 A "No Swimming" sign does not mean "Beware of Alligators" #DisneyGatorAttack — Katalyst InK (@FromtheKatsEye) June 15, 2016 
 
 "We have a large property, and from time to time, we have to remove alligators from our property," Wahler said "Nearly one-third of Walt Disney World property is set aside as a conservation area and these areas attract a variety of native wildlife." 
 
 Hunt for gator 
 
 As a family mourns the death of their son, investigators are trying to pinpoint which alligator attacked him. 
 
 The gator responsible might be dead -- but authorities aren't sure. 
 
 Search teams captured and euthanized at least five alligators as they searched the water for the boy, officials said. 
 
 Forensics teams will try to determine whether one of the alligators already taken from the lake is the one that dragged off the boy, officials said. One method will be to compare bite marks to the teeth of the gators. 
 
 If not, the search for alligators in the lake will continue. 
 
 "We're going to make certain that we have the alligator that was involved, and that we remove it from the lake," Florida Fish and Wildlife Conservation Commission Executive Director Nick Wiley said. 
 
 Spokeswoman Tammy Sapp said the investigation was ongoing as of Thursday afternoon. 
 
 Disney beaches closed 
 
 By midmorning Wednesday, Disney had closed all beaches in its resort area "out of an abundance of caution" after the attack, a Disney representative said. 
 
 "Everyone here at the Walt Disney Resort is devastated by this tragic accident," Wahler said in an earlier statement. "Our thoughts are with the family. We are helping the family and doing everything we can to assist law enforcement." 
 
 CNN Map 
 
 Body found intact 
 
 A dive team found the boy's body intact in 6 feet of murky water about 10 to 15 yards from where he was attacked, Orange County Sheriff Jerry Demings said Wednesday. 
 
 Lane's body had only a few puncture wounds, according to a source familiar with the investigation. 
 
 "Of course, the autopsy has to confirm that, but there is likely no question in my mind that the child was drowned by the alligator," Demings said. 
 
 The fact that the body was found intact makes sense, said Jeff Corwin, host of "Ocean Mysteries" on ABC. 
 
 "That gator came in, grabbed that boy, pulled him, the dad startled that gator, the gator let him go and then the boy drowned," he speculated. 
 
 Alligators don't swim that far -- they sink into the murky water and lurk there -- which may explain why the father did not see the boy when he jumped into the water to try to save him, Corwin said. 
 
 A community mourns 
 
 The boy's parents, Matt and Melissa Graves of Elkhorn, Nebraska, issued a statement on Thursday. 
 
 "Words cannot describe the shock and grief our family is experiencing over the loss of our son. We are devastated and ask for privacy during this extremely difficult time," they said. "To all of the local authorities and staff who worked tirelessly these past 24 hours, we express our deepest gratitude." 
 
 Lane Graves 
 
 As word spread about the toddler's death, friends and neighbors in the family's hometown offered words of condolences and support. 
 
 Omaha Infogroup, a business data firm where Matt Graves works, released a statement saying the company was stunned and heartbroken. 
 
 "Matt's family is the light of his life and his family's anguish is our own," the statement said, according to CNN affiliate KMTV . "What happened last night was a terrible accident and one that is devastating to the entirety of Infogroup." 
 
 The family's church, St. Patrick's Catholic Church in Elkhorn, posted a message to parishioners on its website 
 
 "It is with a heavy heart," the message said, "that we inform you of a tragic loss in one of our parish families. ... Please honor their privacy at this time and keep them in your prayers." 
 
 The tragedy has shaken the community, said Norman Hale, principal of Elkhorn St. Patrick's School. 
 
 "It's unimaginable, the grief and what they're going through right now," he told CNN affiliate KETV 
 
 More than a million gators 
 
 In Florida, alligators may be a common sight, but attacks are rare. If a human gets close to alligators, 99% of the time they take off, Corwin said. 
 
 "No Swimming" signs are posted at the Disney resort. 
 
 Unprovoked alligator attacks in Florida (1948-2016) 257 The number of attacks that required medical care 23 People who died as a result of those attacks 8 Number of children (16 and under) among the 23 deaths 1977 The year that saw the most attacks requiring medical care (13) 1 in 2.4 million The likelihood of a resident being seriously injured in an attack Source: Florida Fish and Wildlife Conservation Commission (as of April 2016) 
 
 As of April, only one other major alligator attack had been reported in the state this year, according to the Florida Fish and Wildlife Conservation Commission. That person survived the attack, but required medical care. 
 
 In 2015 there were nine major unprovoked attacks in Florida, with one fatality. 
 
 Officials said Disney World has never experienced an incident like the one involving the boy. 
 
 There are an estimated 1.3 million alligators in Florida, said Arnold Brunell, a wildlife biologist and researcher for the Florida Fish and Wildlife Conservation Commission. That number has been holding steady for the past five years, he said. 
 
 According to the wildlife commission's website, at least 23 people have been killed by Florida alligators since 1973. That includes several children. One was a 4-year-old girl who in 1988 was killed while walking along the edge of a lake in Charlotte County. 
 
 Another was 10-year-old Bradley Weidenhamer, whose parents said they can relate to what Lane Graves' parents are going through. Bradley died when an alligator grabbed him and dragged him into the Loxahatchee River in Martin County on June 20, 1993. 
 
 In that 43-year time frame, 373 people were bitten by alligators; 247 required medical care beyond simple first aid. ||||| Two days after an alligator attack that killed a toddler, Walt Disney World is planning to put up signs warning visitors about the reptiles that swim in its resort waterways. 
 
 Disney's resort beaches remained closed Thursday as the state's wildlife agency continued investigating the death of 2-year-old Lane Graves. An alligator snatched the toddler and dragged him into the Seven Seas Lagoon as he played along the shore at the Grand Floridian Resort & Spa on Tuesday night. 
 
 His body was recovered after a 16-hour search. The Orange County Medical Examiner's Office said Thursday the cause of death was drowning and "traumatic injuries." 
 
 Since then, numerous tourists have come forward sharing stories of alligator sightings at the resort and questioning why Disney didn't do more to inform tourists about the gators. One employee said he had told management at the Grand Floridian the area should be fenced off. 
 
 Disney has "no swimming" signs along the beaches at its hotels. A source with knowledge of the situation told the Orlando Sentinel that the resort would put up more explicit signs warning about the gators. It is not certain exactly when or where they will be posted. 
 
 Disney spokeswoman Jacquee Wahler issued a statement Thursday afternoon saying, "we are conducting a swift and thorough review of all of our processes and protocols. This includes the number, placement and wording of our signage and warnings." 
 
 Father Matt Graves had tried to free his son from the gator's jaws Tuesday night near the edge of the 172-acre man-made lake. The family, including wife Melissa and the couple's 4-year-old daughter, was on vacation from Nebraska. A witness said the attack happened in less than a minute. 
 
 Disney World president George Kalogridis abruptly left festivities at the opening of Disney's new resort in Shanghai to return to Orlando after the toddler's death. Walt Disney Co. Chief Executive Officer Bob Iger also has spoken with Lane's family. 
 
 Providing visitors more specific information is a good idea, Pacific Asset Management leisure analyst Bob Boyd said. 
 
 Boyd said Disney will likely step up monitoring of its gator population. And "I would expect in certain locations they'll effectively over time be fencing off and closing some off some of those areas," he said, referring to the lakefront beaches at its hotels. "I think you'll probably see more boardwalks versus beaches." 
 
 Disney stopped allowing swimming in the lagoon areas in the 1990s, Boyd said, and since then, "the role of the beaches has really diminished as far as an attraction for them. I expect that will accelerate quite a bit." 
 
 Beaches at resorts including the Grand Floridian still have featured lounge chairs and "movie nights." The Contemporary Resort advertises parasailing, personal watercraft rental and tubing on Bay Lake. 
 
 Omar Azze said he saw a small alligator in the water at Coronado Springs about a month and a half ago. Azze said he reported it to a lifeguard and a front-desk employee but was told the gators don't get trapped until they grow larger. "Everybody was so cavalier about it," he said. 
 
 One employee said there has been a problem with guests feeding gators at the resort. 
 
 This wasn't Disney's first alligator attack, although it is the first fatal one. In 1986, an alligator bit a boy at a pond at Disney's Fort Wilderness campground. 
 
 It is "reprehensible" the resort did not warn guests of alligators, said Tom Scolaro, a Miami personal-injury attorney. "I think Disney is facing considerable liability for the wrongful death of this young child and this tragedy that happened to these parents," he said. 
 
 Pete Werner is known for signing off his Disney podcasts saying "stay out of the damn lakes." 
 
 Werner said he started using that phrase after a conversation with an employee at the Polynesian Village Resort. 
 
 "These kids were out playing in the lagoon. He said to me, 'These people are crazy. … Do you have any idea what's in those lakes? We have gators, water moccasins, a lot of boats pumping all sorts of oil and gasoline into that water.'" 
 
 Still, Disney probably never expected an alligator to attack someone, he said. "I think this was more a failure of imagination than anything else." 
 
 spedicini@orlandosentinel.com or 407-420-5240
– The family of Lane Graves, the 2-year-old killed by an alligator at Walt Disney World on Tuesday, released a statement Thursday, staying it's "devastated" by his death. "Words cannot describe the shock and grief our family is experiencing over the loss of our son," ABC News quotes Matt and Melissa Graves as saying in the statement. They offered their "deepest gratitude" to authorities and staff who worked to find their son after the attack. The family was hanging out on the beach at Seven Seas Lagoon near Disney World's Grand Floridian Resort when Lane was grabbed by an alligator and dragged underwater. His body was found Wednesday. On Thursday, the medical examiner announced Lane died from drowning and traumatic injuries, CNN reports. Disney also released a statement Thursday, promising to install alligator warning signs. “We are conducting a swift and thorough review of all of our processes and protocols," the Orlando Sentinel quotes the statement as saying. "This includes the number, placement, and wording of our signage and warnings." The only warning signs currently placed around the Seven Seas Lagoon read "no swimming please." Since the attack on Lane, a number of tourists have come forward about seeing alligators at Disney World. Disney was sued in 1986 after an alligator bit a child at its Fort Wilderness campground.