A police investigation has been launched in to the alleged leak of emails from the former UK ambassador in the US.
Sir Kim Darroch called the administration of US President Donald Trump "clumsy and inept" in the emails.
It led to him stepping down from his post earlier this week.
Trump had said the US would no longer deal with Darroch and called him a "a very stupid guy."
The newly announced criminal investigation will try and find out who was behind the leak.

Zohran Mamdani wins NYC mayoral race, capping meteoric rise
Death toll rises to 11 in fire at Bosnian retirement home
Driver rams into pedestrians in western France, nine injured
Philippines begins cleanup after Typhoon Kalmaegi leaves at least 85 dead
China's Shenzhou-20 return mission delayed due to space debris impact