Following reports in the US media, the statement below has been issued through the National Police Chiefs' Council.
A National Counter Terrorism Policing spokesperson said:
“We greatly value the important relationships we have with our trusted intelligence, law enforcement and security partners around the world. These relationships enable us to collaborate and share privileged and sensitive information that allows us to defeat terrorism and protect the public at home and abroad.
“When that trust is breached it undermines these relationships, and undermines our investigations and the confidence of victims, witnesses and their families. This damage is even greater when it involves unauthorised disclosure of potential evidence in the middle of a major counter terrorism investigation.”