Shane Montgomery last seen early Thanksgiving leaving Kildare’s Pub.

Keys belonging to Shane Montgomery, the 21-year-old student who disappeared on Thanksgiving morning, have been found in the Schuylkill River in downtown Philadelphia.

Montgomery disappeared after leaving Kildare's Irish pub in Philly where he had been drinking with friends.

His uncle identified his nephew's keys as belonging to him. They were found in the Schuylkill River by a New Jersey volunteer underwater rescue unit.

They were also near a bridge which a security camera on a nail salon showed him walking across early Thanksgiving morning.

"The last place that Shane's on video is on the bridge right behind the nail salon," his mother Karen Montgomery said. "They found his keys toward the river to the left.

"My heart is broken and I need to bring him home," she told the Daily News.

"I don't think you can print a mother's broken heart."

The disappearance of the Irish American student has sparked a massive search effort.

Montgomery, who has a Celtic cross tattoo on his shoulder, left the Kildare pub early on Thanksgiving morning and has not been seen since. 

Jim Townsend, the Director of Operations of Kildare's Restaurants, said the young man was not inebriated in the bar and had a tab of only $17.

He says it was 1:50am when a relative who worked at Kildare's escorted Shane to the front door.

"I appreciate everybody's prayers and thoughts, and want people to know that we aren't going to stop looking until we find Shane," Karen Montgomery said. "That's what we need, is prayers and thoughts, and we need to find him and bring him home."