(CNN) Days after his deaf and speech-impaired brother was shot and killed by a North Carolina state trooper, Sam Harris wonders whether the shooting happened because his sibling's disabilities led to a misunderstanding. 
 
 No official has said this was the case. But Harris said his family is pressing for more information about why Daniel Kevin Harris was shot near his Charlotte home Thursday after what police say was a roughly 7-mile vehicle chase. 
 
 Daniel Harris' relatives told a crowd of dozens gathered for a vigil outside his house Monday night that they want more answers about the 29-year-old's death. 
 
 "The police need to become aware of how to communicate with deaf people, what that might look like and how to avoid situations like this from ever happening again," Sam Harris, who also is deaf, told CNN affiliate WSOC through a sign-language interpreter on Monday. 
 
 Here's what we know so far about the shooting: 
 
 Police: An 'encounter' happened after driver led trooper on chase 
 
 Daniel Harris was driving a Volvo on Interstate 485 in the Charlotte area when a trooper tried to pull him over on suspicion of speeding around 6:15 p.m. Thursday, the North Carolina State Highway Patrol said. 
 
 Harris did not stop, but instead exited I-485 and drove to his Charlotte neighborhood, highway patrol Sgt. Michael Baker said. 
 
 At the neighborhood, Harris "exited his vehicle, and an encounter took place between the driver and the trooper," leading to the shooting, Baker said. 
 
 Dozens of people gathered in Charlotte for a vigil for Harris on Tuesday. 
 
 Harris died at the scene. Police haven't elaborated on the encounter or revealed what, if anything, the two said or otherwise communicated, or whether the trooper knew Harris was deaf. 
 
 The trooper was placed on administrative leave after the shooting as is usual, Baker said. 
 
 Authorities are gathering dashboard-camera and body-camera video relating to the incident from the highway patrol and the Charlotte-Mecklenburg Police Department, which sent officers to the scene after the shooting, said Audria Bridges, a special agent with North Carolina's State Bureau of Investigation. 
 
 "Because at least 20 highway patrol officers responded, it is taking some time to get all videos related to (the) incident together," said Bridges, whose agency is investigating the shooting. 
 
 Baker and Bridges declined to answer CNN's questions about whether Harris was armed. 
 
 CNN sent emails Tuesday with further questions seeking clarification about the matter, but officials said to protect the integrity of an ongoing investigation, they could not comment. 
 
 Baker passed along a statement from Secretary Frank L. Perry of the North Carolina Department of Public Safety. 
 
 "Any loss of life regardless of the circumstances is truly a tragic and sad event for all involved," he said. "Let us all refrain from making assumptions or drawing conclusions prior to the internal and independent reviews. " 
 
 The Mecklenburg County District Attorney's Office said it will evaluate the case after law enforcement finishes its investigation. 
 
 Neighbor says he heard gunshot 
 
 A neighbor, Mark Barringer, told CNN affiliate WBTV he saw the trooper's car give chase shortly before the shooting. 
 
 "(The trooper's car) was kind of smoking real bad, and then he stopped over here, and then a few minutes later, I heard a gunshot. I saw a body on the street," Barringer said. 
 
 Another neighbor told WBTV that he'd previously seen Harris use sign language. 
 
 "I saw him out in the neighborhood signing with his family," Ryan Russell said. "It seemed like a very peaceful family." 
 
 Harris' relatives, friends and neighbors gathered outside his home for Monday's vigil. Flowers and written messages lined a sidewalk. 
 
 A page on the crowdfunding site YouCaring.com is raising money for what the family said is Harris' memorial and cremation expenses. Money left over would be used to establish a foundation "to educate and provide law enforcement proper training on how to confront deaf people," a message on the page said. 
 
 Sam Harris told WSOC through the interpreter that his brother was funny and sociable. 
 
 "People enjoyed being around him -- just a very unique man," he said. "It's a really nice feeling knowing you've got a community like this that supports you." ||||| A man who was shot and killed by a NC Highway Patrol Trooper in northeast Charlotte Thursday following a car chase had a hearing and speech impairment, according to a Charlotte-Mecklenburg Police report. 
 
 The incident happened around 6:45 p.m. on Seven Oaks Drive near Rocky River Road. Officials from the State Highway Patrol said that shortly after 6 p.m. troopers tried to stop a Volvo on I-485 near the 30-mile marker for a speeding violation. 
 
 A seven-mile chase led the vehicles to Seven Oaks Drive. Troopers said the driver, later identified as 29-year-old Daniel Kevin Harris, got out of the vehicle, and that led to an encounter where a shot was fired. Harris died at the scene. 
 
 The State Bureau of Investigation (SBI) identified Harris and the trooper involved, NC State Trooper Jermaine Saunders, Friday afternoon. 
 
 From WBTV's Sky3, multiple emergency crews could be seen in the area after the shooting. Officers had multiple large areas roped off, closing down several roadways around the scene. 
 
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 Neighbors in the Seven Oaks community were surprised to learn that the deadly shooting had unfolded in their community. 
 
 "It's a little nerve-wracking to come home and have half of the Charlotte-Mecklenburg Police Department on the street along with four or five state troopers," explained Neighbor Rick Kralik Thursday night. 
 
 "The Highway Patrol car came down across here. He was kind of smoking real bad, and then he stopped over here, and then a few minutes later, I heard a gunshot,“ another neighbor, Mark Barringer, said. "I saw a body on the street, and it looked like he was dead." 
 
 Neighbor Ryan Russell said he had noticed Harris' disability. 
 
 "I saw him out in the neighborhood signing with his family," Russell said. "It seemed like a very peaceful family. These things are always heartbreaking." 
 
 Russell is also asking neighbors to keep the family in their thoughts. 
 
 "I’m already trying working on trying to get people to reach out to this family, because no matter this guy did, the family is hurting because they lost one of their loved ones," he said. 
 
 Neighbor Pat Johnson, who lives just around the corner from the scene of the shooting, is asking for the same. 
 
 "I asked everybody to keep them in prayer," Johnson said, "not just for them, but for the entire community, because it's a rough time for them." 
 
 Officials said Trooper Saunders was placed on administrative leave, which is standard procedure after an officer-involved shooting. 
 
 SBI officials said Friday they were in the process of obtaining all available dash cam and body camera video from SHP as well as CMPD. 
 
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– A family is left searching for answers after a deaf man was shot and killed by a North Carolina state trooper last week, CNN reports. Daniel Harris, 29, was driving on the interstate near Charlotte when a trooper attempted to pull him over Thursday. Harris didn't stop, and the trooper followed him for seven miles to his neighborhood. There, Harris got out of his car. Something happened between the trooper and Harris that left Harris dead from a gunshot wound, but police aren't giving details of what led to the shooting. They won't say if anything was said between the trooper and Harris, who is also speech-impaired, or if Harris was armed. Sam Harris wants to know if his brother's disabilities led to a fatal misunderstanding with the trooper. "The police need to become aware of how to communicate with deaf people, what that might look like, and how to avoid situations like this from ever happening again," he tells WSOC. Residents of Harris' neighborhood were stunned by what happened. "I saw him out in the neighborhood signing with his family," one neighbor tells WBTV. "It seemed like a very peaceful family." The State Bureau of Investigation is looking into the shooting, and the trooper is on administrative leave, which is standard following a shooting.