Audit Office report 'hugely damaging' to PSNI
More than 1,000 former RUC officers who took redundancy were later rehired on temporary contracts by the Police Service of Northern Ireland.
The officers had retired under the most generous redundancy scheme in the world. It was part of the Patten reforms of policing.
The Audit Office said that almost 20% of those officers had returned.
The spending watchdog said that, at one point, the process was "out of control".
BBC Newsline's home affairs correspondent Vincent Kearney has more.