Northern Ireland Prison Service boss Sue McAllister to leave post
Director general of the Northern Ireland Prison Service Sue McAllister will leave her post at the end of October.
Mrs McAllister was appointed in May 2012 and was the first woman to hold the most senior position within a prison service anywhere in the UK.
A recruitment competition will be launched next month for her successor.
Mrs McAllister said: "Working in prisons in Northern Ireland is different and I have always been hugely impressed by the courage, professionalism and dedication of my colleagues.
"They play a crucial part in making Northern Ireland a safer place and I want to thank them all for their hard work over the last four years."
She paid tribute to the staff and in particular to the two officers murdered by dissidents during her tenure.
"The murders of David Black and Adrian Ismay were despicable and an attack on the whole community.
"Both came as a tremendous shock and I want to pay tribute to their families, friends and colleagues."
She said her focus had been leading transformational reform of the service and that role had come to a natural end.
Justice Minister Claire Sugden said: "The role of director general is a uniquely challenging post and Sue McAllister has led the organisation through the reforms, which have placed rehabilitation at the core of its work.
"The Prison Service plays a vital role in the justice system and Sue can be proud of what she has achieved in her time as director general."