A suicide bomber has killed at least 40 people and wounded many others in an attack on a food distribution centre in the north-west of Pakistan.
Islamist militants battling the state have attacked buildings handing out humanitarian aid in Pakistan before, presumably because they are symbols of the government and Western influence.
The bomber blew himself up at a security post close to the relief centre in the town of Khar in the Bajur region close to the Afghan border, said local administrator Sohail Khan.
He said the distribution centre was used by the World Food Programme and other agencies to distribute food to conflicted-affected people in the region.
The 40 victims were believed to be waiting for food, he said.
Pakistan has been rocked by more than 200 suicide bombings over the last three years, especially in the north-west.