A man suspected of firing a shotgun at a toll booth near a heavily traveled bridge north of San Francisco, killing a toll collector and one other person, was arrested Wednesday morning in Placer County by the California Highway Patrol, according to Richmond, Calif., police.

Authorities apprehended 46-year-old Nathaniel Burris on Interstate Highway 80 just after 3 a.m. Burris sparked a massive manhunt after he was believed to have fled the shooting that left a gruesome scene that snarled Tuesday evening commuter traffic.

The shooting took the life of a 51-year-old toll collector and a man who was sitting in a parked car at the entrance of the Richmond-San Rafael Bridge.

The shooting took place at about 6 p.m., authorities said. Burris was believed to be driving a white Ford van with "Western Express Shuttle" written on the side, Patrol Officer Sam Morgan said.

Gov. Arnold Schwarzenegger's office said the toll collector was Deborah Ross, who had worked as a Caltrans toll collector for eight years. Capitol flags will be flown at half-staff in her honor, a statement said.

Officers found Ross' body inside a toll booth, and investigators have been searching for clues amid shattered glass. Patrol Sgt. Trent Cross described the scene as "horrific."

The bridge over the northern portion of San Francisco Bay connects well-to-do Marin County with Richmond and other East Bay suburbs.

The Associated Press contributed to this report.