Mission Viejo, Calif. (April 26, 2025): On Friday, April 25, 2025, at around 7:30 p.m., deputies were called to an apartment complex on La Glorieta in the city of Mission Viejo reference a man suffering from multiple gunshot wounds. Deputies arrived and rendered aid to the victim. The Orange County Fire Authority arrived and transported the victim to the hospital where he was pronounced deceased. The victim has been identified as Miguel Joaquin Mata, 39, of Mission Viejo.
Deputies established a perimeter and located the suspect, Sean Jeffery Williams, 55, of Mission Viejo. Williams is a resident of an apartment near the victim, though it is unknown at this time what led to the shooting.
OC Sheriff’s Homicide investigators responded and began their investigation. Based on the interviews conducted by investigators and the evidence at the scene, Williams was arrested and booked into Orange County Jail on suspicion of homicide. No further information will be released at this time.
Anyone with additional information is encouraged to call the Orange County Sheriff's Department at (714) 647-7000. Anonymous tips can be sent to OC Crime Stoppers at 855-TIP-OCCS (855-847-6227) or at occrimestoppers.org.
