Culolias went missing Friday night after being kicked out of a bar for being drunk, The (Phoenix) Arizona Republic reported Wednesday.
Culolias was at the Cadillac Ranch bar at Tempe Marketplace for a Sigma Alpha Epsilon fraternity social. His mother reported him missing Sunday, and the search has centered on the Tempe Town Lake area, where she found a shoe she believes is her son's.
"We are saddened by the disappearance of Jack Culolias and are working with local authorities on this matter. We hope he is found safe and our thoughts go out to his family and friends during this difficult time," Chris Osborn, a managing partner of Cadillac Ranch, said in a statement.