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An investigation was underway on Monday into the death of a man whose body was found floating near a rocky jetty in Playa del Rey the previous night, authorities said.

It remained unclear how the body — which was discovered around 7:20 p.m. near the 6100 block of the Ballona Creek, in a rocky area of the water  — got to the location, according to a Los Angeles County Sheriff’s Department’s official.

Sheriff’s investigators and lifeguards had initially responded to a report of human remains near the Pacific shore, the Los Angeles Fire Department tweeted.

When authorities arrived, they discovered the body floating in the water, the Los Angeles Times reported.

Divers from the sheriff’s Special Enforcement Bureau assisted with the recovery of the body, the department tweeted just after 4:30 a.m. Monday.

“There’s no further information on how the body was discovered, or the circumstances surrounding what led to the body being in that area,” Sheriff’s Deputy Mike Barraza said.

Although homicide detectives were investigating the death, Barraza stressed that authorities have still not determined if he had been killed.

“It’s not a homicide at this time, it’s an unknown cause death investigation,” he said.

An autopsy would be conducted to determine how he died.

Officials also have yet to determine the man’s identity. The man did not have a wallet with him, according to the Times.

The remains were found near an area where the creek empties into the Pacific Ocean. The scene is also close to the Ballona Wetlands Ecological Reserve.

Anyone with information about the case has been asked to call the sheriff’s Homicide Bureau at 323-890-5500. Anonymous tips can also be left by calling Crime Stoppers at 800-222-8477.