Pakistan ? Pakistani paramilitary forces destroyed a handful of militant centers and uncovered alleged torture cells as they pressed ahead Sunday with an offensive against extremists near the Afghan border, officials said.

A spokesman for Pakistan’s top Taliban commander promised Sunday that militants would retaliate against the government, and were suspending efforts to reach and implement peace deals.

The operation in the Khyber tribal area is a shift for Pakistan’s new government, which has sought to reduce violence through the peace deals. But with extremists increasingly threatening Peshawar, a major northwest city, and ambushing supply convoys bound for U.S.-led coalition troops in Afghanistan, the government turned to its troops.

The paramilitary Frontier Corps killed one attacker but encountered relatively little resistance since launching the operation Saturday, officials said.