Vandalism at 10800 BLOCK MERCER AVE on 05/16/2026 12:35 PM
Type: Vandalism
Date: 05/16/2026 12:35 PM
Description: 594 PC - Vandalism. Community: La Sierra. Report #: LPD26051600098839
Address: 10800 BLOCK MERCER AVE, Riverside, CA
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Area Missing Persons
Name
Heidy Quintana-PerezMissing Age
13Est. Current Age
15Last Seen
Orange County, CA on 10/30/2023Physical Description
Race: Hispanic Ethnicity: Gender: Female Hair: Black Eyes: Brown Height: 5'1" Weight: 163 lbsCase Number
23040040Area Cold Cases
Name
Ralph KnappenbergerAge
Cause of Death
HomicideInfo
On 10/02/1982, deputies were dispatched to Ralph’s residence, which was located at 31462 Yucaipa Blvd., Yucaipa. Upon arrival, deputies located Ralph inside his apartment. Ralph was severely beaten and was transported to Loma Linda hospital. Ralph died on 02/14/1983 while in the Intensive Care Unit. Ralph’s vehicle was stolen during the assault and was located in Riverside.Agency
San Bernadino