(Whiting, IN) - Authorities are investigating the death of a man whose body was found in Lake Michigan.

According to the Indiana Department of Natural Resources, the victim was Gerardo Casteneda-Soto, 27, of Chicago.

Emergency responders at about 4 p.m. on Saturday were called to Whiting Lakefront Park for a person struggling in the water and going under the surface near the boat ramps.

The man was later discovered in the water and pronounced dead at a hospital.

So far, the cause of his death is currently unknown. Authorities hope to be able to make an official ruling on the cause after obtaining the results of an autopsy.