A letter bomb has been sent to the North’s chief constable.

Army bomb experts have made safe a viable device sent to the headquarters of the North’s police service.

A group calling itself the IRA has claimed responsibility for suspect packages sent to armed forces recruitment centres in the UK last week.

Fears of a fresh terror threat are growing after Downing Street revealed suspicious packages sent to armed forces recruitment offices bore “hallmarks of Northern Ireland-related terrorism”.

Suspected explosive devices sent to armed forces recruitment offices bear "hallmarks of Northern Ireland-related terrorism", a Number 10 spokeswoman has said.