Jon Boutcher said the organisation ‘will do everything necessary to deal with such issues’.

The arrest was made on Wednesday after a complaint was made.

Northern Ireland's Justice Minister Naomi Long said the Ombudsmans’ office received around eight such complaints a year.

The PPS in Northern Ireland also said Will Kerr will not face charges relating to an allegation of misconduct in public office.

The police ombudsman for Northern Ireland investigated a claim made in a manuscript allegedly authored by a former military officer.

In a statement, Mrs Anderson said she was looking forward to recommencing her role.