Yes, updated articles says he is in custody (not dead from suicide):
http://news.bbc.co.uk/2/hi/middle_east/8044229.stm
But it appears from the BBC article, that it may be a reference to a different muslim attacker:
Earlier this month, a man in an Iraqi army uniform shot dead two US soldiers and injured three others at a base near Mosul.
Iraqi military reports said he was a soldier also working as an imam at a mosque on the base.