Funeral services for Pomona Police Officer Greggory Casillas

POMONA CA MARCH 22, 2018 --- Claudia Guzman, wife of deceased Pomona officer Greggory Casillas, walks out of Purpose Church after the funeral services Thursday, March 22, 2018. Officer Casillas was gunned down last week while responding to a barricaded suspect in Pomona. (Irfan Khan / Los Angeles Times / Pool)  (Irfan Khan / Los Angeles Times / Pool)

Pomona Police Chief Michael Olivieri speaks at the funeral services of Pomona Police Officer Greggory Casillas at Purpose Church in Pomona.

Gov. Jerry Brown, left, California state attorney general Xavier Becerra and CHP Commissioner Warren Stanely attend the funeral for Pomona Police Officer Greggory Casillas.

From left, Gregory Casillas, the father of slain police officer Greggory Casillas, Claudia Guzman, Casillas’ wife, mother Marisela Casillas and other family members at the funeral held at Purpose Church in Pomona.

Pomona Police Officer Greggory Casillas’ partner, Officer Alex Nguyen, attends the funeral.

Pallbearers carry the casket at the funeral for Pomona Police Officer Greggory Casillas, who was gunned down last week while responding to a barricaded suspect in Pomona.

Some Pomona resident stand in rain to watch and pay their respect in front of the church for Pomona Police Officer Greggory Casillas.

Claudia Guzman, wife of slain Pomona Police Officer Greggory Casillas, and family members arrive for Casillas’ funeral Thursday morning. Casillas was 30 years old.

Pomona police officers carry a U.S. flag during Thursday’s funeral services for Pomona Police Officer Greggory Casillas, who was gunned down March 9 while responding to a barricaded suspect.

Pomona Police Officer Greggory Casillas’ cap and a U.S. flag rest on a pedestal during Casillas’ funeral services at Purpose Church in Pomona on Thursday.

Pomona Police Chief Michael Olivieri greets officers at the funeral service for slain Pomona Police Officer Greggory Casillas on Thursday.