Human remains found in Decatur County, Tennessee, over the weekend are those of Holly Bobo, a nursing student who went missing more than three years ago, the Tennessee Bureau of Investigation, or TBI, said late Monday. Bobo disappeared from her home in April 2011 at the age of 20.

Authorities reportedly said that a human skull was discovered by two men on Sunday not far from Bobo’s home in the town of Parsons, about 110 miles east of Memphis. TBI Director Mark Gwyn reportedly said that the remains, which were found at a location also close to the home of Zachary Adams, the primary suspect in the case, had been confirmed through dental records. According to reports, Bobo was last seen by her brother walking into the woods with a man.

“It was my prayer, as well as the prayers of many others, that Holly Bobo would be found,” Gwyn said at a news conference, according to NBC News.

Two men -- Adams and Jason Autry -- have been arrested previously in connection with the kidnapping and murder of Bobo, and both suspects have reportedly pleaded not guilty. Gwyn reportedly said that Adams and Autry are close friends, and authorities are trying to look for more suspects in the case.

“I assure you all, this is not over by any means,” Gwyn reportedly said. “The investigation is still going on to get to the truth.”