Authorities suspected foreign terrorists’ involvement in the Sunday, Aug. 29, murder of a Lyft driver, followed by a shooting at Plano headquarters carried out by a Garland man.

The perpetrator, 32-year-old Imran Ali Rasheed from Garland, was reported to have killed 26-year-old Isabella Lewis, a Lyft driver of Garland, and stolen her car, according to Fox4 News.

Rasheed then appeared in the lobby of the Plano police headquarters and opened fire at a civilian staff and another person inside with a semi-automatic pistol.

Police fired back in response, and Rasheed sustained three bullet wounds. He was confirmed dead on Monday following the injuries he suffered from the gunfight. 

Officials said he left a note in the stolen car that indicated his behaviors were driven by terrorism. Still, they could not yet come to a conclusion. Specific information on the note was yet to be revealed.

“There’s no indication that he was working with others or that he was in contact with others who may be planning similar activity,” said Matthew DeSarno, FBI Dallas Special Agent-in-Charge, as Fox4 News reported. “We’re early in the investigation, and that’s a priority investigation for us to determine.”

According to the outlet, the FBI investigated him for terrorist links between 2010 and 2013, but the inquiry concluded that he did not constitute a threat. 

Authorities had not figured out why Rasheed would aim at the Plano station. The Lyft driver, Ms. Lewis, was a random victim. However, the scene when he pulled her murdered body out of the car was caught on a surveillance camera.

“You see this stuff on TV all the time,” said Dean D’Ambroaia, a nearby business owner who saw the terrifying recording. “And it wasn’t until afterwards that I realized that wasn’t TV. It was happening in the back of our building.”

Officers are looking at Rasheed’s connections and contacts to investigate any potential terrorist organization he might have been involved with.

“At this point we do not believe that the suspect, Imran Ali Rasheed, was provided assistance by others,” said Plano Police Chief Ed Drain. 

His profile had been somewhat clean, with police in Plano and Garland saying the last time they worked with him was 10 years before over a traffic accident. 

According to the Dallas Morning News, his family was shocked by what he had done because they did not notice any potential terrorist signs in him. Rasheed had been fired from work and was struggling with a medical condition.