Suicide attack on Pakistan security checkpoint kills 12

At least 12 people were killed in a suicide bomb attack on a security checkpoint in Pakistan's tribal region, a local military official said.

Security forces opened fire on a truck packed with explosives as it approached the checkpoint in the Miranshah area of North Waziristan, the military official told CNN.

The attack happened about 1:30 p.m. local time ( 4:30 a.m. ET) Saturday. The official says the truck blew up before it rammed into the checkpoint, killing bystanders and pedestrians, including five children.

The official asked not to be identified because he is not authorized to speak to the media.

Earlier suspected U.S. missile strike killed at least 12 people in a tribal region in northwestern Pakistan on Saturday morning, local political and military sources said.

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