The two missing Tennessee girls who were allegedly snatched by fugitive Adam Mayes were rescued on Thursday night, and after landing himself on the FBI’s Most Wanted List for their kidnapping, their abductor is now is dead.

"The girls were found alive and appear to be unharmed," said Mississippi FBI special agent Daniel McMullen, reported ABCNews.com. "Officers also apprehended top-10 fugitive Adam Mayes. Preliminary reports indicate Mayes shot himself in the head and was later pronounced dead in an area hospital."

Mayes is suspected of kidnapping Alexandria, 12, and Kyliyah Bain, 8, after killing their mother and older sister because he believed they were his own children.

A fellow inmate of James "Whitey" Bulger gives RadarOnline.com a glimpse into the hellish conditions the crime boss, who has been charged with 19 counts of murder, is held under.

"He's being kept in the hole," Adrian Alves, who is currently incarcerated in a separate unit at Plymouth County House of Corrections, tells RadarOnline.com in an exclusive interview.

"The cell is like 8 x 12, it's very limited, there's no fresh air - it's like a dog cage. He has a guard outside his cell 24 hours a day and when he is moved he wears a three point restraint, which is a waist chain with shackles down to the ankles and up to the wrists and he is flanked by, like, 20 guards. His cell is shaken down twice a day to check there's nothing in there.