Cops find bomb in Northern Ireland city
London - Police say they have found a "substantial" and viable bomb near a courthouse in Londonderry, Northern Ireland's second-biggest city.
Elderly residents from a nearby retirement home and choir boys from St Columb's Cathedral were evacuated as bomb disposal experts performed controlled explosions on the device on Monday.
The Police Service of Northern Ireland says the area around the bomb remained sealed off.
Since last year IRA dissidents have detonated three bombs in Londonderry, damaging several businesses but injuring nobody.
Splinter groups opposed to the IRA's 1997 ceasefire have continued to mount occasional bomb and gun attacks in Northern Ireland, particularly since the 2007 formation of a Catholic-Protestant government that includes IRA veterans.