A local Muslim leader says one of the men who attacked a Normandy church was on French police radar and had travelled to Turkey.

Mohammed Karabila, president of the Regional Council of the Muslim Faith for Haute-Normandie and head of the local Muslim cultural centre, told the Associated Press that "the person that did this odious act is known, and he has been followed by the police for at least a year and a half."

He said the attacker "went to Turkey and security services were alerted after this." He had no information about the second attacker.