SAN FRANCISCO (CBS SF) — Two people were stabbed by a homeless man after they tried to get him to stop urinating at a construction site in San Francisco’s Tenderloin neighborhood Monday afternoon, police said.

The stabbing was reported around 2 p.m. near Larkin and Geary streets.

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The victims, both workers at the construction site, told the man to stop urinating. He then brandished a knife and stabbed them both, police said.

One of the victims suffered a serious injury and was transported to San Francisco General Hospital, according to police.

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The suspect was found shortly after the stabbing and was arrested.

Police were not immediately releasing the man’s name.

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