Paolo Lugo, 82, mistakenly walked down the wrong flight of stairs after cashing a check Friday, leading him to a portion of the Udine facility that was unfamiliar to him, ANSA reported Tuesday.
Lugo was locked inside the bank when it closed for the weekend and eventually took a seat beside the basement boiler to await rescue. He was found Monday by a concerned relative and a bank clerk.
The octogenarian was said by authorities to be "in fairly good shape" despite his three days without food or water.
Celebrity Breakups and divorces of 2014 [PHOTOS]