(CNN) A Florida state agency said Friday it has opened a probe to find out why a roller coaster derailed at an amusement park Thursday night in Daytona Beach. 
 
 The accident sent two riders plunging 34 feet to the ground and left two others dangling in one of the ride's cars, the Daytona Beach Fire Department said. They were among 10 people on the Sand Blaster ride at the Daytona Beach Boardwalk. 
 
 "First and foremost, we're concerned about the individuals who were injured last night. Their well-being and recovery is of the utmost importance," said Jennifer Meale, spokeswoman for the state's Department of Agriculture and Consumer Services. 
 
 Meale said the ride had passed inspection the morning of the accident. It was inspected again after the accident and failed due to deficiency listed as "structural integrity: other." 
 
 She said the ride failed two previous inspections in May due to multiple deficiencies, but all of the problems had been corrected before Thursday's accident. 
 
 Read More ||||| Two people were ejected and six people were hospitalized Thursday night after the rollercoaster at the Daytona Beach Boardwalk malfunctioned, officials said. 
 
 Two people fell roughly 20 feet to the ground when, sometime around 8:15 p.m., the rollercoaster went off track, according to the Volusia County Sheriff's Office. 
 
 All of the patients were alert as they were loaded onto ambulances and transported to Halifax Health Medical Center, paramedics said. A hospital spokeswoman would not comment on their conditions to a News-Journal reporter. 
 
 In all, 10 people were rescued by Daytona Beach firefighters from a coaster car that was left dangling by the derailment and the other two connecting cars, fire officials said. Four were in the front car, which was pointing perpendicular to the ground. Four more were in the second car and two more were riding in the third car, said Sasha Staton, a Daytona Beach Fire Department spokeswoman. 
 
 Daytona firefighters used a ladder truck to remove the stranded riders. 
 
 "Daytona Beach Firefighters did an amazing job tonight rescuing the 10 very frightened passengers on the rollercoaster," Staton said. "They were faced with dangerous conditions as they worked as fast as possible to successfully extricate everyone safely." 
 
 The rollercoaster is called the Sand Blaster. It opened on the Boardwalk at the beginning of August 2013. 
 
 It is 85 feet high and has more than a half-mile of track. The three coaster cars were on a line of track that was about 30 feet from the ground. The front car was hanging down from the track. Two remained strapped in the car for more than 30 minutes while firefighters worked to pull them out, Staton said. 
 
 "I feel like the ride wasn't checked well enough," said 13-year-old Trevor Gutierrez of Atlanta, who last rode on the coaster less than a year ago. He and his family take annual vacations to Daytona Beach. 
 
 The Sand Blaster is one of the few rollercoasters Gutierrez is willing to ride, but he complained that it was too bumpy the last time he was on it. After what took place Thursday, he made up his mind to never to board it. 
 
 "I'm not riding on that thing again," he said. 
 
 When it opened in Daytona Beach in 2013, the ride was 40 years old and was purchased from a closed amusement park in Delaware at the beginning of 2012. 
 
 Daytona Beach Firefighters in the process of rescuing riders from rollercoaster accident at Boardwalkpic.twitter.com/vm1GctCGhq 
 
 — DaytonaBeachFireDept (@DaytonaBeachFD)June 15, 2018 
 
 #DBFD Removing riders from rollercoasterpic.twitter.com/ilFDDeikra 
 
 — DaytonaBeachFireDept (@DaytonaBeachFD)June 15, 2018
– Six people were sent to the hospital late Thursday after an 85-foot high roller coaster derailed in Daytona Beach, Fla. Two people fell as much as 34 feet to the ground from the Sand Blaster's front car, which was left dangling perpendicular to the beach boardwalk with two others strapped in, reports CNN. They were rescued after more than 30 minutes. Four riders from a second car and two from a third were also rescued, with six riders in all taking a trip to the hospital, fire officials said. All injured parties were "alert" as they were loaded into ambulances, reports the Daytona Beach News-Journal. The 45-year-old Sand Blaster operated at an amusement park in Delaware before it was installed in Florida in 2013.