A 21-year-old man has shot and killed three co-workers at a landscape supply company in Texas and then died after shooting himself, police say.

Two men and a woman died in the shooting at the business on San Antonio's north side, according to the city's police department.

Other employees ran from the scene when the gunfire erupted, KSAT-TV reported.

Police responded and secured the area, and hours later they found the gunman with a self-inflicted gunshot wound, officials said.

He was identified by police as Jose Hernandez Galo.

While the motive for wasn't immediately known, Police Chief William McManus said the shooting was not random.

Separately, five people were wounded, one seriously, in a shooting outside a supermarket in San Francisco.

Police responding to reports of gunfire fo

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