SAN DIEGO — A 21-year-old man was slashed on the trolley Sunday evening while he was sleeping, according to San Diego police.

Around 5:30 p.m., officers were dispatched to the the Nobel Trolley Station in La Jolla after receiving a call reporting the stabbing.

The victim, who had got onto the Trolley at 12th and Imperial transit station near the Convention Center, had fallen asleep on the northbound ride. According to SDPD, he reportedly woke up to the attack.

Officers found the victim with a wound to his chest and was transported to a nearby hospital. His current condition is unknown.

The suspect, described as a 5’9″ adult man wearing all black, had fled the scene when officers arrived. No person of interest has been identified.

As of Monday morning, police said they were reviewing surveillance video to assist with the search for the suspect.

The incident did not prompt any delays to service on Sunday or Monday morning, according to MTS. The transit agency said it is fully cooperating with SDPD.

No additional details about the incident were immediately available.