A man hiking in the Santa Monica Mountains Sunday in Pacific Palisades collapsed and died, authorities said.
The man has been identified as 52-year-old James Duncan of Porter Ranch.
Duncan was on a remote trail off East Topanga Fire Road near Topanga State Park about 3:45 p.m., Los Angeles Fire Department spokesman Brian Humphrey said.
The fire department sent in paramedics who started CPR efforts to try and bring back the non-breathing and pulseless man, but those efforts failed, Humphrey said.
Duncan's autopsy is pending.
City News Service contributed to this report.
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