SYDNEY (AP) — The father of a boy accused of stabbing two Christian clerics in Australia saw no signs of his son’s extremism, a Muslim community leader said on Wednesday as police prepared to file charges against rioters who besieged a Sydney church demanding revenge.

The 16-year-old boy spoke in Arabic about the Prophet Muhammad after he stabbed Bishop Mar Mari Emmanuel and the Rev. Isaac Royel during a church service on Monday night that was being streamed online. Neither cleric sustained life-threatening injuries.

The Orthodox Assyrian congregation overpowered the boy and he remained in an undisclosed hospital on Wednesday under police guard. He sustained severe hand wounds in the struggle.

Lebanese Muslim Association secretary Gamel Kheir, an advocate for Sydney’s largest Muslim community, said he spent two hours with the boy’s distraught father at the family home soon after the attack. The family has since left their home for fear of retaliation.