"In spite of support measures which have been put in place previously to assist the trust, and the actions which have been taken, there needs to be further progress in the improvement of patient experience and care in the northern area, " he said.

BBC: Northern Ireland

"We will continue to work together with other health professionals in this area of surgery to ensure high standards of care and patient safety are maintained, " he added.

BBC: Obesity surgery 'seen as quick fix'