PALM SPRINGS, Calif. - Riverside County prosecutors plan to file murder charges Wednesday against the man suspected of shooting two Palm Springs police officers.

The district attorney's office has scheduled a news conference to announce the charges against 26-year-old John Hernandez Felix.

Authorities say Felix fired an assault rifle through the screen door of his family's home Saturday, gunning down officers Jose Vega and Lesley Zerebny as they answered a domestic disturbance call.

Police say a memorial service for the slain officers will be held next Tuesday.

Felix already served time in connection with a 2009 gang shooting. He was charged with attempted murder, but he pleaded guilty to a lesser charge of assault with a gun.

He served 18 months of a four-year sentence and was paroled in 2011.