San Antonio police are investigating after a man’s body was found in San Pedro Creek on Sunday evening.

Officers responded just before 6:40 p.m. to the 600 block of Dolorosa Street, according to a preliminary police report. The man, believed to be between 45 and 55 years old, was found in the water and pronounced dead at the scene.

The Bexar County Medical Examiner’s Office is working to identify the man and determine the cause and manner of his death.