Londonderry bomb alert: Four mortar bombs found in van
4 March 2013 Last updated at 10:18 GMT
Four live mortar bombs "primed and ready to go" have been intercepted by police in a van in Northern Ireland.
The van had its roof cut back to allow the mortars to be fired. Police believe the target was a Londonderry police station.
Three men in their 30s have been arrested following the overnight operation in Derry which police have linked to dissident republicans.
Chris Buckler reports from Belfast.