Man stabbed in car in Brentwood parking lot

Driver stabbed in Brentwood parking lot

A man was stabbed while sitting in his car in a Brentwood parking lot. A good Samaritan helped track down the suspect.

LOS ANGELES - Police arrested a man accused of stabbing another man in his car in a Brentwood parking lot on Tuesday.

What we know:

The attack happened just before 10:30 a.m. in a Ralphs parking lot near the corner of Wilshire Boulevard and Bundy Drive, according to the Los Angeles Police Department.

Anthony Gallegos saw the attack, and said he yelled at the man to stop. He told FOX 11 that the attacker reached into the driver's window and stabbed the driver several times in the back, while the driver tried to get out of the other side of the car.

Video showed the victim getting out of the car covered in blood, shouting for help and for someone to call the police.

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Gallegos and others shouted at the attacker, who ran off. A man claiming to be one of the victim's friends said he followed the attacker while on the phone with 911. Officers were able to track the suspect down and arrest him.

First responders took the driver to the hospital.

What we don't know:

Officials did not identify the alleged attacker. Witnesses told FOX 11 that the attacker appeared to be a homeless man, but the LAPD did not confirm that.

The driver's condition was unknown as of Wednesday night. It was also not immediately clear what led to the stabbing.