State Department has stated that US had not yet been formally notified of Husain Haqqani's resignation and appointment of Sherry Rehman as Pakistan's new Ambassador to US.

Addressing a press conference here, US State Department spokesman Mark Toner said the US had not yet been formally informed about Husain Haqqani's resignation and appointment of Sherry Rehman as ambassador to US.

The spokesman praised Husain Haqqani for playing vital role in maintaining Pak-US ties.

Toner said the US would work with new ambassador Sherry Rehman for strengthening strong Pak-US ties, adding that change of envoy would not affect relations.