Two held over car bomb released

The officer sustained serious leg injuries

A man and a woman arrested in relation to the attempted murder of an off-duty policeman in County Tyrone have been released pending further inquiries.

The pair were arrested on Friday night over the attack near Castlederg.

Four men arrested at different locations in County Tyrone on Thursday morning are still being held, a police spokesman said.

The officer sustained leg injuries after a booby-trap bomb exploded in his car in Spamount last Monday.

Dissident republicans have been blamed for the attack.