The California Highway Patrol has arrested a 19-year-old San Pablo man and identified a 15-year-old Richmond boy as suspects in a shooting on the approach to the San Francisco-Oakland Bay Bridge last month that left a passenger wounded in the leg.

What happened on Sept. 26

The shooting happened Sept. 26 on eastbound Interstate 80, west of the Bay Bridge toll plaza, according to the CHP. Investigators said it appeared to be targeted and retaliatory, growing out of an earlier physical fight in San Francisco. After that altercation, the CHP said, the suspects followed the victims onto the freeway and fired at their vehicle, hitting a passenger in the leg.

The CHP has not released the name of the injured passenger or said how many people were in the vehicle that was hit.

Warrants served in Richmond and San Pablo

Detectives with the CHP Golden Gate Division's Major Crimes Unit identified the suspects as Olman Santiago Martinezaguilar, 19, of San Pablo, and a 15-year-old boy from Richmond, whose name was not released because he is a minor.

At about 6:15 a.m. on Thursday, Oct. 8, the division's Warrant Service Team served search and arrest warrants at homes in Richmond and San Pablo. Officers arrested Martinezaguilar at his San Pablo home and seized a firearm that investigators believe is connected to him. The 15-year-old was already in custody on an unrelated matter, the agency said.

Martinezaguilar was booked into Santa Rita Jail in Dublin on charges related to attempted murder, shooting at an occupied vehicle and other offenses. CBS News Bay Area reported that he was scheduled for a plea hearing on Tuesday morning, Oct. 13. The CHP announced the arrests on Monday, Oct. 12, four days after the warrants were served.

"As California's state police, the CHP is committed to protecting the public and holding people accountable for violence that endangers our communities," CHP Golden Gate Division Chief Steve Ramos said in a statement. "This arrest reflects our investigators' dedication to identifying those responsible and keeping Californians safe."

Why the CHP handles Bay Bridge shootings

The Bay Bridge and its approaches are state highways, so shootings there fall to the CHP rather than to San Francisco or Oakland police, even when the dispute behind them started on city streets. In this case it was the Golden Gate Division's Major Crimes Unit that worked the investigation from the Sept. 26 shooting through the Oct. 8 warrants.

For East Bay commuters, the approach to the toll plaza is a daily route for huge numbers of drivers, which is part of why a shooting there draws so much attention: gunfire between two cars at freeway speed puts every driver nearby at risk, not only the people being targeted.

What comes next

Both suspects are presumed innocent unless proven guilty in court. The CHP has not said whether more arrests are expected, and the case against the 15-year-old will be handled in the juvenile system, where records are generally not public. Anyone with information about the Sept. 26 shooting can contact the CHP Golden Gate Division.