AlQa'dah 24, 1434, Sep 30, 2013, SPA -- A US drone killed three militants in north-western Pakistan, officials said Monday, as the government condemned the attack, the second within 24 hours. Two missiles fired by the unmanned aerial vehicles hit a compound in Boya area of North Waziristan tribal district near Afghan border, security officials told dpa. On Sunday, at least four militants were killed in a drone attack in the district. The identities of those killed in both attacks were not known, the official said.