NORWALK (CBSLA) — Sheriff’s homicide detectives are investigating the death of a man along the northbound San Gabriel (605) Freeway in Norwalk.

California Highway Patrol officers were patrolling the area when they saw what appeared to be a disabled vehicle, and found a Hispanic man in his 40s  with trauma to his body. He was pronounced dead at the scene.

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The cause of death is unknown, and an autopsy is pending. His name was withheld pending family notification.

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A SigAlert was issued for two right lanes of the freeway as well as the Firestone Boulevard off-ramp for the investigation. All lanes were reopened by 8:20 a.m.

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(© Copyright 2018 CBS Broadcasting Inc. All Rights Reserved. City News Service contributed to this report.)