Washington: Brad Sherman, the US member of parliament, has expressed concern over the issue of threat letter to Pakistan.
Sherman has raised concerns that the US State Department has clarified the position on the issue of the threat letter to Pakistan.
Prime Minister Imran Khan had waved a letter during a meeting in Islamabad on March 27, saying that a letter from a very powerful country had threatened him.
Later, in an interview, he mentioned the United States for the threatening message.