SAN DIEGO -- Two teenagers were spraying graffiti near a freeway underpass when they were stabbed Tuesday evening, authorities said.
The stabbings happened near Interstate 8 in Old Town, on the San Diego River bed along Morena Boulevard, according to San Diego police.
An 18-year-old was stabbed in the chest and a 19-year-old was stabbed in the stomach, police said. Both victims were taken to UCSD Medical Center.
Detectives say the teens were tagging when someone came up, stabbed them and ran away.
"They managed to get to Morena Boulevard where they waved down an officer who was driving by, when he got out of the car he noticed they had been stabbed," said San Diego Police Lt. Mike Ramsay.
The California Highway Patrol issued a traffic alert for the northbound Interstate 5 connector to eastbound Interstate 8 and for the Morena Boulevard offramp from westbound I-8 while police investigate the stabbing and search for the assailant.