Man battling for life after getting shot in S.F. Mission District

Lights and siren of police car in San Francisco. Lights and siren of police car in San Francisco. Photo: Bill Hutchinson Photo: Bill Hutchinson Image 1 of / 1 Caption Close Man battling for life after getting shot in S.F. Mission District 1 / 1 Back to Gallery

A 21-year-old man suffered life-threatening injuries after a shooting early Sunday morning near Dolores Park, officials said Monday.

ShotSpotter, a gunfire detection system, first alerted police officers to the shooting about 1:20 a.m. They found shell casings at the intersection of 18th and Dolores streets, the northeast corner between Mission High School and Dolores Park.

The victim showed up at San Francisco General Hospital’s emergency room with a gunshot wound to the chest, officials said.

Police have not made any arrests or released a suspect description. Anyone with information about the incident can call (415) 575-4444 or send a text message to TIP411.

Kimberly Veklerov is a San Francisco Chronicle staff writer. E-mail: kveklerov@sfchronicle.com Twitter: @kveklerov