SUNNYVALE (AP) – A California man who authorities said drove into a crosswalk in a quiet Silicon Valley suburb, injuring eight people, is an Iraqi war veteran who suffers from post-traumatic stress disorder, his mother told The Associated Press on Wednesday.

Sunnyvale Police Department said in a tweet that the suspect is Isaiah Joel Peoples, a 34-year-old resident of Sunnyvale. He was arrested Tuesday night after speeding through an intersection and crashing his Toyota Corolla into a tree. The conditions of the injured, which included a 13-year-old girl, were not immediately disclosed.

Peoples is retired from the U.S. Army, said a spokeswoman for the Pentagon.

The suspect from the El Camino Real/Sunnyvale Saratoga incident has been identified as Isaiah Joel Peoples (12/02/1984) a resident of Sunnyvale. pic.twitter.com/luVZ7oT3Z0 — Sunnyvale DPS (@SunnyvaleDPS) April 24, 2019

He is an auditor for the Department of Defense in Mountain View, said his mother, Leevell Peoples of Sacramento, California, on Wednesday.

She couldn’t fathom any situation in which her timid son would deliberately crash into innocent people, other than something related to the PTSD he experienced after serving as an Army sharpshooter in Iraq, she said.

“Unless the car malfunctioned, he would not have done that. He’s like the perfect, model citizen,” she said. “He’s an Army vet, he’s a good kid, never been arrested. I promise you: it was not deliberate. If anything, it was that Army.”

She said he received inpatient treatment for PTSD in 2015.

The crash occurred at a large intersection in an area of commercial strip malls in Sunnyvale, which residents describe as a quiet suburb. Businesses and roads were back open Wednesday morning, and police tape removed.

The only sign of the crash was skid marks on the sidewalk where the car had swerved up, and a dented tree that Peoples crashed into, muttering thanks to Jesus as he slumped over the steering wheel of a hissing car.

Don Draper, 72, said he was waiting in his convertible for the light to turn green when the Toyota zoomed by. Draper said he was so enraged that he marched over to the car.

“He wasn’t hurt apparently, and he was mumbling over and over again, ‘thank you Jesus, thank you Jesus, thank you Jesus’ again and again,” Draper said. “And at this point I realized I had to call 911.”

.@SunnyvaleDPS confirms they’re serving search warrant at registered address of vehicle in connection with pedestrian crash suspect, 1000 block of Greco Ave @KPIXtv pic.twitter.com/umZDt5uYmd — Kiet Do (@kietdo) April 24, 2019

Witness statements matched Draper’s recollection that the driver was speeding and drove directly toward the pedestrians without trying to veer away or stop before striking them in the city located about 50 miles (80 kilometers) south of San Francisco.

Some of the witness statements “show that the driver did not try to avoid the pedestrians at the cross walk, and there was no attempt to swerve, drive away or brake,” said Sunnyvale Police Cpt. Jim Choi.

But Leevell Peoples described him as a well-behaved son who treats everyone with respect and attends church on Sundays. Isaiah wouldn’t even run a yellow light, she said.

“He basically probably has no friends but the people he works with,” she said. “I’m just hoping the Army stuff wouldn’t have caused this to happen. He doesn’t have any seizures or anything.”

She said her son graduated from Sacramento State University after returning from Iraq in 2007. But he did have “a bad episode” with PTSD about two years ago and Peoples said her son told her he has been regularly taking medication since.

“Everyone in his family knows how cautious he is, and he would never do anything to hurt someone,” she said.

Former housemate Chuck Herrera described Peoples as very quiet, someone who had to be coaxed into going out for drinks or dinner. But he said Peoples was polite and kind and sweet to Herrera’s toddler son.

He recalls Peoples “always had a lot of pills,” and had a cough.

“The guy I met was not someone who you think will hurt someone,” he said. “My guess is something happened.”

Police officers went to Peoples’ apartment complex Wednesday and the FBI is assisting California officials in the investigation.

Leevell Peoples said the Army told her son they had to retire him because of his PTSD. Pentagon spokeswoman Lt. Col Carla Gleason confirmed Wednesday he retired from the Army but had no other details.

Draper said a victim landed in front of his car, with what appeared to be a bloody head wound.

“I saw a body flying through the air, and one of them was right in front of me,” Draper said. “This woman was about 10 feet (3 meters) off the ground; I can see her feet pointing upward.”

Some of the eight people injured were at a corner or on the crosswalk when the car hit them before smashing into a tree, Choi said. The victims were taken to the hospital after the crash near a shopping center in Sunnyvale, Choi said.

An update on their conditions was expected later Wednesday.

Copyright 2019 The Associated Press.