Rookie Pomona officer killed after suspect fires through a door: ‘He left his family at home to protect yours’

Petty Officer Bernadette Ramirez of the California National Guard salutes a memorial in front of the Pomona Police Department for fallen Pomona Police Officer Gregory Casillas.

A handwritten note sits among the many flower bouquets at a memorial in front of the Pomona Police Department.

Lincoln Ayala, 5, carries a bouquet of roses on Saturday to lay at a memorial in front of the Pomona Police Department for Gregory Casillas.

Los Angeles County Sheriff Jim McDonnell, left, and others show their support to Pomona Police Chief Michael Olivieri, center in dark glasses.

A police officer in tactical gear works near the scene where one officer was killed and another wounded after chasing a suspect in Pomona.

A police officer in tactical gear near the scene where one officer was killed and another wounded Friday at a Pomona apartment.

L.A. County sheriff’s deputies take Isaias de Jesus Valencia, suspected of fatally shooting a Pomona police officer, to a waiting vehicle on Saturday.

People wait for news near the scene where one officer was killed and another wounded at a Pomona apartment complex.