Police briefly shut down a section of northbound State Route 110 in Los Angeles to search for bullet casings after a driver shot another driver.
Officer Bruce Borihanh says officers responded to reports of shots fired on the freeway Tuesday afternoon, and found an injured driver who had managed to exit the freeway before crashing into a fence.
Borihanh says the injured driver's passenger called police.
Police told NBC L.A. that the driver, described as a man in his 40s, was struck in the head and hospitalized in critical condition after crashing into a fence near the off-ramp.
The freeway was closed between Interstate 105 and the Florence Avenue exit for about an hour.
Police are unsure if the matter was gang related.
Borihanh says the shooter's vehicle was described as a newer black Nissan Sentra and continued traveling north after the shooting.
The shooting remains under investigation.