James Holmes, the gunman behind the Dark Knight massacre in Colorado last July, has reportedly turned Muslim and prays five times a day.
The killer showed off a lengthy, thick beard during a court appearance earlier this month, and a prison source has claimed it is a symbol of his new-found faith.
The source said Holmes has turned to Islam as a way of justifying his horrific murder spree in an Aurora, Colorado cinema on July 20 which left 12 people dead and 58 people wounded.
'He has brainwashed himself into believing he was on his own personal jihad and that his victims were infidels,' a prison source told the National Enquirer.
'Changed man': James Holmes, pictured in a Colorado courtroom during his arraignment on March 12, has reportedly turned Muslim in a bid to justify his horrendous killing spree
He now prays five times a day, sticks to a strict Muslim diet and spends hours each day studying the Qur'an, the source said. But his new routine has upset Muslim inmates.