Photo: Pomona Cop Gregory Casillas Killed In CA Standoff

One of the officers has been identified by the Los Angeles County Coroner’s Office as Gregory Casillas, of Upland. He later died at the hospital. The other officer was undergoing surgery Saturday morning and is expected to survive. The injured officer has not been identified, ktla is reporting.

The shooter, who has not been identified, remains barricaded inside the apartment and the scene is active, the captain said. He noted that he could not release further details because the investigation is ongoing.

TheCount.com located the following photo of the fallen officer.

“It is with a heavy heart that I must report that one officer did not survive,” Police Chief Michael Olivieri said on Twitter. “The second officer is in stable condition.”

The officers’ names were not immediately released.

The shooting happened about 9 p.m. Friday in the 1400 block of Palomares Street, near Fernleaf Avenue, where officers responded to a report of a barricaded suspect at an apartment complex.