Fire crews recovered a body from Lake Catherine in Antioch Monday afternoon while searching for a man who went swimming and did not resurface Saturday. | Photo: Remi Merrill

Fire department divers recovered a body in Lake Catherine near Antioch Monday that is believed to be the swimmer who went missing Saturday.

The Lake County Sheriff’s Office and Antioch Fire Protection District responded around 3:50 p.m. Saturday to the area of the 43100 block of North Andyville Lane in unincorporated Antioch for a water rescue.

Lake County Sheriff’s Office Deputy Chief Christopher Covelli said the Lake County Sheriffโ€™s Marine Unit was told that a man jumped into the water and did not resurface.

A preliminary investigation showed a 52-year-old Mount Prospect man jumped off of a pontoon boat to swim.

The boat, which was in between Channel Lake and Lake Catherine, was being operated by the man’s adult son.

Fire crews search Lake Catherine nearby the 43100 block of North Andyville Lane in unincorporated Antioch for a man who went swimming and did not resurface Saturday afternoon. | Photo: Max Weingardt

The 52-year-old man briefly resurfaced but then fell below the water surface and was not seen again, Covelli said.

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The Mutual Aid Box Alarm System (MABAS) was activated to the box alarm level to bring numerous fire department boats and divers to the scene.

Fire crews from well over a dozen departments in Lake County and McHenry County responded to the alarm.

Sheriffโ€™s marine unit boats and fire department boats searched the lake with sonar for approximately eight hours Saturday.

The water in the area they were searching is approximately 30 feet deep, Covelli said.

Fire crews search Lake Catherine nearby the 43100 block of North Andyville Lane in unincorporated Antioch for a man who went swimming and did not resurface Saturday afternoon. | Photo: Joe Shuman/J. Shuman Photography (2023)

They called off the search at midnight and resumed around 6 a.m. Sunday.

The second day of searches ended around 3:15 p.m. Sunday, Covelli said.

Search crews were called back to the area Monday afternoon and fire department divers recovered a body.

Covelli told Lake and McHenry County Scanner that it is believed to be the body of the missing 52-year-old man based on personal identifiable information.

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The Lake County Coroner’s Office responded and is in the process of scheduling an autopsy.