UPDATE: Body found at Warnimont Park identified as missing 19-year-old swimmer

Updated: 3:06 p.m. August 12, 2019

MILWAUKEE COUNTY, Wis. (CBS 58) -- A body found at Warnimont Park Sunday has been identified as a swimmer who went missing nearly a week earlier.

Investigators say 19-year-old Aaron Polnitz of Brookfield was swimming in Lake Michigan east of Warnimont Park on August 5 when he failed to resurface after disappearing underwater. 

Rescue efforts continued Monday evening into Tuesday until officials said the search shifted to a recovery. 

Polnitz was said to be part of a group of three and the other two swimmers were taken to the hospital for precautionary reasons after swallowing a lot of water Monday. Officials say they were released from the hospital the morning of August 6 and are okay.

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Posted: 6:54 p.m. August 11, 2019

MILWAUKEE COUNTY, Wis. (CBS 58) -- The Milwaukee County Sheriff's Office responded to a body found in Warnimont Park by a group of bikers. The identity of the body is not yet known yet.

Officials with the Sheriff's Office said the call came in at approximately 4:00 p.m. Sunday.

The investigation is ongoing by the Milwaukee County Sheriff's Office and no further information is available at this time.

Warnimont Park is located in Cudahy.