Body found in barrel at Malibu beach, homicide detectives investigating

A body was found inside a barrel at Malibu Lagoon State Beach in California.
The body was discovered by a lifeguard and homicide detectives are investigating.
The person was pronounced dead at the scene, but identity and cause of death are unknown.
The barrel containing the body washed ashore and was cordoned off by authorities.
Few details have been released as homicide investigators take over the case.