EMBED >More News Videos An investigation continues into who shot and killed Tristan Beaudette during a camping trip with his two little girls at Malibu Creek State Park in Calabasas last week.

CALABASAS, Calif. (KABC) -- A $15,000 reward has been doubled in an effort to generate new leads in the shooting death of a father at Malibu Creek State Park.The now-$30,000 reward includes contributions from the Los Angeles County Board of Supervisors, the city of Malibu and the victim's employer.Tristan Beaudette was camping with his two young daughters when he was shot in the head last month So far, there are no suspects.Deputies said there have been several other shootings in the area over the last two years.If you have any relevant information about this ongoing investigation, you're urged to contact the Los Angeles County Sheriff's Department's Homicide Bureau at (323) 890-5500. You can also submit anonymous tips by calling Crime Stoppers at (800) 222-TIPS.