San Diego police were investigating after a body was found lying face down in the San Diego River in Grantville on Tuesday afternoon, authorities said.

Someone called police shortly after 1:10 p.m. to report finding the body in the riverbed. The caller told police the person may have been female and around 60 years old, said police Officer Sarah Foster. The caller said they did not see any signs of trauma.

Lifeguards and police responded to the scene to retrieve the body. No other details were immediately available.