The lawyer who is representing Erich Nowsch, suspected in an alleged “road rage” shooting in Las Vegas, questioned whether the victim was angry about driving or something else.

Nowsch, 19, is being held on suspicion of murder, attempted murder, and firing a gun from a vehicle in the killing of 44-year-old Tammy Meyers, a mother of four who had been giving her 15-year-old daughter a driving lesson before the deadly confrontation, according to a Daily Mail report.

Conrad Claus, who is representing Nowsch, said that the story the Meyers family has told the Las Vegas Metropolitan Police Department has changed numerous times, and that a suspect sketch doesn’t look anything like Nowsch. Claus said that his client has a “strong argument for self-defense,” according to the report.

He also argued that police had allowed Nowsch to get high before arresting him, which may make his statements to police inadmissable.

A police report of the incident, which took place Feb. 12, indicated that Nowsch wasn’t angry about something that happened while driving, but he was afraid that someone was after him. The suspect also claimed that he wasn’t driving.

Nowsch told police he saw a gun waved at him from a green car in a school parking lot, causing him to assume that they were after him.

Meyers had been taking her daughter, Kristal, to a school parking lot to practice driving their green sedan. After driving on some residential streets, Meyers took over at about 10:50 p.m. and headed home. Kristal told authorities that a silver car sped up behind them and pulled up alongside, prompting her to reach over to honk the horn.

The silver car showed up several times during the encounter, passing in a bike line and eventually spinning out sideways in front of them, forcing them to stop. A man got out and warning, “I’m gonna come back for you and your daughter,” according to the report. Meyers hit the gas and sped around the silver car on its way home.

Upon reaching home, Kristal said she thought she saw the car again, causing her mother to go in and get her 22-year-old brother, Brandon, who grabbed a 9mm handgun and told his mother to call 911.

Claus said it was odd that Meyers did not go to the police immediately after being threatened.