A 33-year-old man was stabbed early Sunday in Petaluma after a younger man came up to his parked car and began yelling at him.

The victim, a Petaluma resident whose name wasn't released, told police the stabbing occurred about 4:30 a.m. in the parking lot behind the Denny's restaurant at 4986 Petaluma Blvd. North.

The man was dropped there to retrieve his car after spending the evening at the Graton Resort - Casino in Rohnert Park, Petaluma police said in a press release.

The man said he was waiting for his car windshield to defrost, with his driver's side window down, when a stranger in his 20s with a dark jacket and a buzzed haircut began to yell at him.

The older man told the stranger he had the wrong person, after which the assailant brandished a knife and stabbed the man in the upper torso. The man ended the attack by driving away and went to Petaluma Valley Hospital, where he was treated for wounds to his chest and upper arm. The injuries weren't deemed life threatening.