Police on Sunday found a body it believes is that of a missing student of Yale University, Annie Le, 24.

Investigators found a body hidden inside a laboratory wall and believe it is Le's, Reuters reported. The student was last seen at the laboratory before she vanished last Tuesday. Her credit cards and cell phone were found at the lab.

The building where the laboratory is located can only be accessed with a university ID. Police are investigating the suspected killing, according to Reuters.

Le was set to be married on Sunday. Her fellow students began dropping off flowers near the building where she worked.