Monserrat Colorado, a 20-year-old woman, was shot multiple times late on June 2, 2025, on the 1500 block of Lukup Lane in Costa Mesa. Officers responding to multiple 911 calls around 11:10 p.m. found her on a sidewalk with several apparent gunshot wounds; they administered aid until Costa Mesa Fire & Rescue transported her to a local hospital, where she was pronounced dead.
Investigators quickly indicated that the assailant was someone the victim knew.
In the first days after the shooting, authorities publicly sought the suspect while canvassing the area and gathering evidence. Colleagues later identified Colorado as a home healthcare worker who had just finished a shift and was waiting for a ride when she was attacked.
By June 6, detectives arrested 19-year-old Oscar Saldivar of Huntington Beach on suspicion of Colorado’s murder, noting investigative leads that pointed to an acquaintance of the victim. Police announced the arrest the following week as the homicide inquiry continued.
On June 9, prosecutors charged Saldivar with murder and filed a sentencing enhancement for the discharge of a firearm causing death. Authorities have not publicly detailed a motive, and the case remained under investigation as of the latest reports.
