The political party led by the former cricket star Imran Khan claims to have blown the cover of the CIA‘s most senior officer in Pakistan as part of an increasingly high-stakes campaign against US drone strikes.

The Pakistan Tehreek-e-Insaf (PTI) party named a man it claimed was head of the CIA station in Islamabad in a letter to police demanding he be nominated as one of the people responsible for a drone strike on 21 November, which killed five militants including senior commanders of the Haqqani Network.

John Brennan, the CIA director, was also nominated as an “accused person” for murder and “waging war against Pakistan”.

The US embassy said it could not comment but was looking into the matter. The CIA spokesman Dean Boyd would not confirm the station chief’s name and declined to immediately comment, AP reported.

If his identity is confirmed it will be the second time anti-drone campaigners have unmasked a top US spy in Pakistan.