In an interview with New England Foundation for the Arts, when asked about his usage of American-styled English and pronunciation, he revealed that he had lived for some time in Boston. He had spent 4 years in the USA and worked as a painter in Boston. The BBC reported that Khan spoke Pashto, Urdu, English, Arabic and Persian, and had lived in or travelled across more than a dozen countries in the Middle East, Europe, the US and Asia.
In April 2009 he denounced any Pakistanis who disagreed with his interpretation of Islam calling them non-Muslims. It was also revealed due to a telephone intercept that Khan had urged attacks on the families of soldiers. "Strikes should be carried out on their homes so their kids get killed and then they'll realise". Before the start of the Army offensive against the Taliban, Khan claimed that his fighters controlled "more than 90 per cent" of Swat.
After the 2009 operation in Swat he was still at large, vowing that his men will step up attacks. However he was arrested on 10 September by the security forces of Pakistan  in the suburbs of Mingora.
- "Pakistan to hang 'butcher of Swat' Muslim Khan". BBC. 2016-12-29. Retrieved 2017-02-04.
- Interview with Haji Muslim Khan: Part II April 27, 2009 (PDF). The NEFA Foundation. 2009-04-27. p. 3. Retrieved 2009-08-24.
I lived in Boston, Massachusetts, United States, a foreigner there.
- Watson, Ivan (2009-05-14). "Taliban: All local leaders must quit". CNN. Retrieved 2009-09-11.
In an earlier phone interview with CNN, he described how he had spent four years living in the United States, working as a painter in the Boston, Massachusetts, area.
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- "General Bajwa signs black warrants of 8 terrorists - Pakistan - Dunya News". dunyanews.tv. Retrieved 2016-12-28.
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