DATE/TIME: August 12, 2024 / 5:32 a.m.
INCIDENT: In-Custody Death Investigation
LOCATION: 8700 Block of Vivero Street, Rancho Cucamonga
DECEDENT(S): Mark Anderson, 64-year-old Male, Resident of Rancho Cucamonga
SUMMARY: On Monday, August 12, 2024, at approximately 5:32 a.m., deputies from the Rancho Cucamonga Station were requested to respond to the 8700 block of Vivero Street regarding a person threatening to shoot himself.
Upon arriving, deputies contacted Mark Anderson by phone in an attempt to have him exit the house unarmed and receive help, however, Anderson refused. Shortly after 6:00 a.m., Anderson exited the house with a rifle. Deputies continued their attempts to negotiate with Anderson without success and Anderson shot himself. He was pronounced deceased at the scene.
Detectives with the Sheriff’s Specialized Investigations Division responded and have assumed the investigation.
Anyone with information about this case is asked to contact Detective Francisco Demara, Specialized Investigations Division, at (909) 890-4904. Callers can remain anonymous and contact We-Tip at 800-78CRIME or www.wetip.com.
Refer: Detective Francisco Demara or Sergeant Nicolas Craig
Station: Specialized Investigations Division
Phone No. (909) 890-4904
Case No. DR# 112408931 / H#2024-079
SHANNON D. DICUS, Sheriff-Coroner
San Bernardino County Sheriff-Coroner Department
