A group calling itself “the IRA” has claimed the bomb attack on a Derry courthouse.

In a statement provided to local paper the Derry Journal, the group said it placed the car bomb which detonated in Bishop Street shortly after 8.10pm on January 19.

The statement read: “We also caution those who collaborate with the British that they are to desist immediately as no more warnings will be given.

The group added that it will “continue to strike at crown forces and personnel and their imperial establishment”.

Read more: Irish Examiner (Ireland)