The search continues for missing Boston University graduate Eric Munsell. Police investigating the disappearance rescued someone else Monday night from Boston Harbor.

Munsell, a 24-year-old aviation engineer for General Electric, has been missing since Saturday night, when he left a Boston lounge after celebrating his birthday, New England Cable News reported.  His mother, who lives in Georgia but is staying in Boston until her son is found, said there aren’t any clues about Munsell’s disappearance.

"Right now we don't really have any leads to go on," Munsell’s mother, Mary Lynn Mills, told NECN.  She said at one point Munsell was outside the lounge but disappeared by the time his friends met up with him outside the establishment.

"I'm sure they were all drinking and partying, and he apparently stumbled his way into the men's room, and at that point he was escorted out, not given the option of retrieving his coat,” she said.

Hopes that Munsell was found were dashed after Boston police detectives rescued a man trying to climb out of Boston Harbor turned out not to be the missing Boston University graduate. The detectives were near the harbor investigating Munsell’s disappearance when they came upon the man, the Boston Globe reported.

Police did not say why the rescued man, whose name was not publicly released, was in the water. Authorities said he was expected to survive the ordeal.

“He wasn’t in the best condition; he couldn’t communicate very well,” Boston police spokesman Officer James Kenneally told the Globe.

The Boston Police Department’s Facebook account released a missing persons alert for Munsell on Monday. The missing Boston University graduate was described as a white man with brown hair and brown eyes, 6-foot-1-inches tall and 180 pounds with a scar on his left cheek. He was last seen wearing a blue checkered shirt and blue jeans. Anyone with information on Munsell’s disappearance was urged to call 911 or Boston Police District A-1 at 617-343-4248.