Pakistan has lifted a travel ban on its former ambassador to the United States who had been under investigation for his connection to a controversial memo sent to Washington asking for U.S. help in preventing a purported army coup.

Husain Haqqani, who resigned his diplomatic post, said Monday he intends to travel to the U.S. to join his family there.

Haqqani told a Pakistan Supreme Court commission earlier this month he had “no role in creating, drafting and/or delivering” the memo to Admiral Mike Mullen, the top U.S. military official at the time.

In October, Pakistani-American businessman Mansoor Ijaz wrote a column in The Financial Times accusing Haqqani of writing the memo requesting U.S. assistance to prevent a coup. The request was reportedly sent to Mullen in May.

Ijaz has refused to travel to Pakistan to testify before the commission because he feels he will be detained. His lawyer says Ijaz is willing to record his testimony elsewhere and submit it to the commission investigating the scandal.