The Northern Ireland Police Service is investigating the theft of documents amid a “significant” data breach.
The files include a spreadsheet containing the names of more than 200 serving officers and personnel.
They are believed to have been stolen from a private vehicle in Newtownabbey, near Belfast, on July 6.
And it comes as the PSNI declared a “critical incident” with Northern Ireland Police Chief Simon Byrne cutting his family vacation short to deal with the crisis.
You must answer questions from politicians about the incident that has aroused great concern.
Police Service of Northern Ireland’s chief information risk officer, Deputy Chief Constable Chris Todd, said: “Police are investigating the circumstances surrounding the theft of documents, including a spreadsheet containing the names of more than 200 officers and personnel on duty.
“The documents, along with a laptop and radio handed over by police, are believed to have been stolen from a private vehicle in the Newtownabbey area on 6 July.
“We have contacted the officers and staff involved to inform them of the incident and an initial notification has been made to the Information Commissioner’s office about the data breach.
“This is an issue we take very seriously and as our investigation continues we will keep the Northern Ireland Police Board and the Information Commissioner’s Office updated.”