Police review Caerphilly council chief's unlawful rise 6 March 2013 Last updated at 16:25 The way a council unlawfully awarded its chief executive a £27,000 pay rise is to be reviewed by police. Avon and Somerset Police confirmed that they have been asked by Gwent Police to look at the Wales Audit Office (WAO) findings on Caerphilly council. It emerged hours after the release of the report which said the council's actions over Anthony O'Sullivan had been "unlawful on a number of grounds." A council spokesman said earlier in the day that it was considering the report. In a statement, the Avon and Somerset force said it would be liaising with the Crown Prosecution Service (CPS). Having considered the Wales Audit Office report and having received advice from our legal services department, we have decided that it is a matter that should be investigated by the police to ensure complete transparency and independence End Quote Gwent Police The WAO investigators concluded that the local authority did not advertise a special meeting in September 2012 to decide the salary of Mr O'Sullivan and other senior officers. There was also no adequate record because the meeting's minutes were very brief, they said. Human error A council spokesman said earlier: "It is important to stress that the decision of the senior remuneration committee was rescinded at a meeting of full council on 17 January, where independent external legal advice was received and a new decision was reached. Gwent Police said: "Having considered the Wales Audit Office report and having received advice from our legal services department, we have decided that it is a matter that should be investigated by the police to ensure complete transparency and independence. However in light of our close proximity and working relationship with Caerphilly County Borough Council, it's not appropriate for it to be investigated by the Gwent force, and as such the investigation has been referred to Avon and Somerset Police.