Two people were shot, one fatally, in a San Dimas park.
Investigators tell Eyewitness News that one person died at the scene in Pioneer Park.
The second victim was transported to Pomona Valley Medical Center with three gunshot wounds.
The suspects remain at large. A description was not immediately issued.
The identity of the victims has not been released.
The Los Angeles County Sheriff's Department is investigating.
1 killed, 1 wounded in shooting at San Dimas park