Homicide detectives from the Los Angeles County Sheriff's Department are investigating after human skeletal remains were found in the Angeles National Forest.
Investigators responded to mile marker 46.60 in the forest about 12:25 p.m. to follow up, Los Angeles County Sheriff's Department officials said. The area is above Monrovia.
"Detectives also learned that surveyors were working in the area when they noticed the human skeletal remains off the side of the highway," Deputy Eric Ortiz of the Sheriff's Information Bureau said in a written statement.
Aerial video from Sky5 showed a patrol vehicle waiting along a road. Nearby, the remains appeared to be bones around pants and a belt.
"The victim’s identity and cause of death will be determined by the Los Angeles County Department of Medical Examiner-Coroner," Ortiz said.
The investigation was ongoing, officials said. No further details were available.
Anyone with information about the remains can contact the Sheriff's Homicide Bureau at 323-890-5500. Tips may also be submitted anonymously to L.A. Regional Crime Stoppers at 800-222-8477.