Crain, 34, was killed in the line of duty when he and his partner were ambushed while on routine patrol around 1:35 a.m. Thursday. The officers were in their patrol car stopped at a red light. The second officer, a trainee, was seriously wounded. The second officer's name has not been released.
Authorities have identified Christopher Dorner as their prime suspect. Dorner is an ex-Los Angeles Police Department officer who is wanted in two other killings, including the shooting death of an assistant basketball coach and her fiancé. A $1 million reward was offered for information leading to Dorner's capture.
Authorities had kept Crain's name undisclosed for fear Dorner might attack Crain's family.
"Because this individual is targeting families, we were hoping that by this point he would be in custody. Clearly, that hasn't happened, but we're going to bury (Crain) and we're not going to fail to recognize our officer, our hero," said Riverside Police Chief Sergio Diaz.
Crain graduated from Redlands High School in 1996. He attended Crafton Hills College in Yucaipa for a year before enlisting in the Marines. He served two tours in Kuwait.
Crain leaves behind a wife, 10-year-old son and 4-year-old daughter.
A funeral service has been arranged for Crain at 10:30 a.m. Wednesday at Grove Community Church at 19900 Grove Community Dr. in Riverside.
"We look forward to honoring his service," Riverside Mayor Rusty Bailey said. "There is no greater calling to give one's life in service to your country, to your community, and he's done that for us."
Officials said updates on funeral services and the route will be posted as it becomes available at RPDonline.org. Also, all Riverside police facilities will be closed for normal business Wednesday to allow employees to attend the services.
A fund was set up for anyone wishing to make a donation to Crain's family.
Checks can be mailed to:
Riverside Police Officers Association Assistance Fund (RPOA)
1965 Chicago Ave., Suite B
Riverside, CA 92507