At least 10 suspected militants have died in the second strike in as many days by US drones in Pakistan’s Khyber tribal district, local officials say.
The missiles, fired from unmanned drones, hit houses in the villages of Speen Drang and Shandana, in the Tirah Valley, the officials said.
An unmanned aircraft strike killed five militants in the valley on Thursday.
Such drone strikes are credited with killing many top militants, but have roused Pakistani nationalist anger.
There have been more than 100 attacks by pilotless US aircraft in 2010, the majority of them in North Waziristan.
Pakistan publicly criticises drone attacks, saying they fuel support for militants.
But analysts say Pakistani officials privately condone and probably provide intelligence for such strikes.
Pakistan’s military has launched offensives in parts of the north-west, but the insurgents continue to mount attacks.
The US military and the CIA do not routinely confirm that they have launched drone operations, but analysts say only American forces have deployed such aircraft in the region.
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