US concerned over disappearance of Pakistani activists

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The United States has expressed concern over the disappearance of five Pakistani anti-Taliban activists and bloggers who mysteriously went missing last week.

State Department spokesman Mark Toner's remarks on Thursday came after Pakistan's interior ministry asked police to step up efforts to find the missing men, who include Salman Haider, a university professor and rights activist.

Human rights activist Syed Talib Abbas said on Friday that none of the men have been found so far.

Haider criticized the Taliban and the government over its alleged inaction against militants.

No militant group has so far claimed abducting the activists and no government department or intelligence agency has said it detained or arrested any one of the five.

Activists rallied against the disappearances in the city of Karachi late on Thursday.