The New IRA has said it tried to kill a prison officer in Northern Ireland last week and warned it is targeting other prison staff.

The 52-year-old prison officer suffered serious injuries from the bomb blast underneath his van on Friday.

In a coded statement to the BBC in Belfast on Monday morning, the New IRA said there would be further such attacks, adding it had a list of potential targets including other prison officers.

The terror group claimed the man it tried to kill was responsible for training officers who work in a wing holding dissident republican prisoners at Maghaberry jail outside Belfast. It said the attack was the result of a dispute between republican inmates and the prison authorities.

The New IRA claimed it had used semtex explosives in the bomb attack. At the weekend, the Police Federation for Northern Ireland, which represents rank and file officers in the region, warned that dissident republican violence would intensify in the run-up to Easter 2016, the centenary of the 1916 rising against British rule in Ireland.

The New IRA is the largest of the three main terror groups opposed to the peace process. Its formation was announced through a communique to the Guardian in 2012.

Stephen Martin, the Police Service of Northern Ireland assistant chief constable, has also warned it was“very likely” that all three hardline republican organisations would attempt to ratchet up the violence over the next few weeks.