Surrounding blocks were evacuated as authorities, including a SWAT team and a hostage negotiator, tried to work toward a peaceful resolution.

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Khattak has helped negotiate two peace agreements with militants, including one in the tourist area of Swat.

NPR: Taliban Tightens Grip Near Northern Pakistan Border

He prepared a series of Internet videos filled with rambling statements on topics including the gold standard, mind control and SWAT teams.

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