$20,000 Reward Offered for Information in Murder of 23-Year-Old Isaiah Vallejo in Lancaster

LANCASTER, CA — The Los Angeles County Sheriff’s Department is seeking the public’s assistance in identifying the person or persons responsible for the fatal shooting of 23-year-old Isaiah Vallejo, who was killed while attending a party in Lancaster earlier this year.

According to a Sheriff’s Department special bulletin dated September 30, 2026, Vallejo was shot and killed on Friday, July 3, 2026, at approximately 12:10 a.m. in the 45500 block of 21st Street West in Lancaster.

Authorities said Vallejo was attending what investigators described as a “flyer party” when the deadly shooting occurred.

The Los Angeles County Board of Supervisors is offering a $20,000 reward for information leading to the arrest and conviction of the individual or individuals responsible for Vallejo’s murder.

Homicide investigators continue to seek information from anyone who may have witnessed the shooting or has knowledge of the circumstances surrounding the incident.

The Sheriff’s Department has not provided additional details in the bulletin regarding possible suspects, a motive, or whether any arrests have been made.

Public Asked to Come Forward

Investigators are encouraging anyone with information, regardless of how minor it may seem, to contact the Los Angeles County Sheriff’s Department Homicide Bureau.

Anyone with information can contact Detective E. Soliz or Detective D. Sotomayor at (323) 890-5500.

Those wishing to remain anonymous can contact Crime Stoppers at (800) 222-TIPS (8477), submit information through the P3 Tips mobile application, or visit LA Crime Stoppers⁠.

The investigation remains the subject of an active public appeal, and authorities hope the reward will encourage individuals with information to come forward.