SAN ANTONIO, Texas (AP) — San Antonio police are investigating the discovery of a man's body in the waters of the downtown San Antonio River Walk.

Authorities say a worker along the tourist attraction flagged down a river barge driver after spotting the body Sunday morning. The driver located the body and called police.

It's not immediately certain if the death is a homicide or an accident.

Police say the man was clothed and he was carrying identification.