A man’s body was found floating in the waters off Alamitos Bay in Long Beach on Thursday, authorities said.

The body was spotted just before noon near a jetty between Alamitos Bay and the mouth of the San Gabriel River, said Long Beach Fire Department spokesman Jake Heflin.

A Seal Beach lifeguard found the body within minutes and pronounced the man dead, Heflin said.

Long Beach police were called to investigate.

“Officers are currently waiting for the coroner to arrive to do a preliminary assessment to determine if foul play is involved,” said police spokeswoman Shaunna Dandoy.