ROCK HILL, S.C. — Rock Hill Police are investigating a possible drowning after a 21-year-old man was found at the bottom of a swimming pool.

The Rock Hill Herald reports the man’s mother told police she left her home on Wednesday morning and found her son at the bottom of the backyard pool when she returned that afternoon.

Police have not released the name of either the man or his mother.

Paramedics performed CPR on the victim but were unable to revive him.

Police spokesman Mark Bollinger says the incident remains under investigation.

The York County Coroner could not be reached for immediate comment.

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Information from: The Herald, http://www.heraldonline.com