A man died Saturday night after divers pulled him from Jackson Park Harbor on the South Side, authorities said.

About 7:30 p.m., Chicago Police and Fire Department officers were called to an incident of a person in the water at the inner harbor, according to Chicago police. Divers searched for about 10 minutes before finding the man under the water.

Ricardo Hernandez Martinez, 34, was taken to the University of Chicago Medical Center, where he was pronounced dead at 10:12 p.m., police and the Cook County medical examiner’s office said. He lived in the East Side neighborhood on the city’s Far South Side.

He may have been trying to swim across the lagoon when he went under, Chicago Fire Department spokesman Juan Hernandez said. Area Central police were investigating.