From the article:
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.
'None of them condone forms of terrorism or extremism,' the source added. 'And they don't want their religion to be connected to that awful shooting.'
I guess the inmates are fine with ISIS beheading kids for eating or watching soccer..or beheading Christians???