UK & World News
Letter Bomb Attacks: Four Held In Londonderry
Four people have been arrested over several attempted letter bomb attacks, including a number targeting Army recruitment offices.
Detectives made the arrests in Londonderry, the Police Service of Northern Ireland said.
The two men, 35 and 46, and two women, 21 and 44, have been taken to the PSNI's Serious Crime Suite in Antrim.
Devices described as crude but potentially explosive were mailed to seven Army careers offices in southeast England in February.
They were discovered in Oxford, Brighton, Canterbury, Aldershot, Reading, Chatham and the Queensmere shopping centre in Slough.
Last October, another series of letter bombs were sent to high profile political and security figures, including one addressed to Northern Ireland Secretary Theresa Villiers at Stormont Castle in Belfast.
In March this year, two more devices were intercepted at postal sorting offices in Lisburn and Derry.
Both were addressed to Maghaberry high security prison in Co Antrim.
None of the devices exploded.