There are warnings that dissident Republicans are claiming to have sensitive information about some Northern Ireland police officers, following a major security leak. Apologising for the data breach, the chief constable of Northern Ireland, Simon Byrne said advice was being given to officers and staff who might be affected. <br /> Report by Ajagbef. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn
