CHICAGO — Emergency crews continued their recovery efforts Thursday to find a missing man who jumped off a boat into Lake Michigan.

Bryan Jackson, 38, left 31st Street Harbor on a boat with a group of people around 3 a.m. Tuesday, according to his girlfriend Sarah Virani.

The U.S. Coast Guard report witnesses on board said Jackson jumped into the lake around 7:45 a.m., about a mile off 31st Street Harbor, and never resurfaced.

Rev. Tanya Lozano Washington, who is the mother of Jackson’s children, reported him missing Tuesday on Instagram.

“Please help us find @itsbjack the father of my 2 kids went missing after jumping off a boat near 31st harbor, if you have any information please contact me,” her post says.

Lozano Washington asked the public to help family and friends search for Jackson at 31st Street Harbor on Wednesday.

The U.S. Coast Guard conducted an hour long search Wednesday morning, but couldn’t locate him and suspended that search.

The Chicago Police Department’s Marine Unit and officers on bike were still out Wednesday afternoon, but told WGN-TV that this is now considered a recovery effort.

Jackson is a former football player and athletic trainer. His friends and family have a lot of questions regarding his disapperance and why the 38-year-old would have been out on the lake at that time.