A suspected US missile strike in north-west Pakistan, the second drone attack in four days, has killed 13 people.

Local officials in North Waziristan, near the Afghan border, said the dead included women and children as well as militants - some of them foreigners.
But a Taleban spokesman denied this, saying all those killed were civilians.
The US military does not routinely confirm drone attacks, but US forces in Afghanistan are believed to be the only ones in the region with the capability.
Pakistan is critical of drone use because, it says, civilians are often killed, fuelling support for militants.