SAN FRANCISCO (CBS SF) — A man suffered life-threatening injuries in a stabbing in San Francisco’s Tenderloin neighborhood this weekend after he refused to let two people use a porta-potty, police said.

The stabbing occurred shortly before 1:30 p.m. Sunday in the area of Eddy and Taylor streets, according to police.

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The suspects, described by police as a 23-year-old woman and a man of unspecified age, asked the victim to use a portable toilet located in a lot in the area.

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When the victim refused, the suspects allegedly stabbed him in the upper torso with a knife, police said.

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The victim was taken to a hospital with life-threatening injuries. No arrests had been made in the case as of Tuesday morning.

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