A Florida man who was awaiting execution for the horrific murder and rape of a 13-year-old girl has died by suicide in prison.

Matthew Caylor, 50, took his own life on Tuesday, despite being on death row.

It is unclear how Caylor died or why it wasn't prevented by corrections officers.

State Attorney Larry Basford confirmed Caylor's death, and said by committing suicide 'he saved the taxpayers of Florida a lot of money,' WTVY reported.

'Matthew Caylor was a sexual predator that had violated his parole in Georgia and came down here for a last hurrah in Bay County. After a trial and numerous appeals, he knew he was facing the same inevitable fate as Kayle Bates.'