SAN FRANCISCO (CBS SF) — A man suffered life-threatening injuries in a stabbing after the suspect catcalled his girlfriend in San Francisco’s Tenderloin neighborhood early Saturday morning, police said.

Officers responded to a report of a stabbing at Larkin and Ellis streets around 4:45 a.m.

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Arriving officers located a 31-year-old man suffering from multiple stab wounds to his neck and back, police said.

He was transported to San Francisco General Hospital for life-threatening injuries, according to police.

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An investigation indicated that the man was walking home with his girlfriend when the suspect started catcalling her, police said.

The man confronted the suspect and an argument ensued, ending with the suspect stabbing the man multiple times with a knife, according to police.

The suspect vehicle is described as a silver sedan, police said.

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No arrests were made, police said.