Martha Alfaro, 76, was fatally shot in San Francisco’s Corona Heights neighborhood late on the night of July 30, 2017. Police found her with a gunshot wound near 15th and Beaver streets about 11:45 p.m.; she was taken to a hospital and later died of her injuries.

Authorities identified her 52-year-old son as the suspect. He barricaded himself in his home and a 15-hour standoff followed, during which police believed he was armed with the same handgun used in the shooting. Streets were closed and nearby residents were ordered to shelter in place. Negotiators worked to secure a peaceful surrender; about 2:45 p.m. the next day he emerged bleeding from a self-inflicted chest wound and was taken into custody and to a hospital with life-threatening injuries.

A sweep of the home, including a bomb squad search, found no explosives or other threats. No officers fired their weapons. Officials had not released a possible motive and the investigation was ongoing. If anyone has information about the shooting or events that night, please come forward.