ISLAMABAD, Pakistan (CNN)  -- Eight police personnel were killed in an early-morning attack Saturday on a police security checkpoint in Pakistan's Punjab province, a police official said.

The attack happened at 3:30 a.m. Saturday (2230 GMT Friday). Some personnel were asleep in the checkpost guard quarters and others were standing guard when unknown militants attacked the checkpost from their vehicle, a police official from the Mianwali district of the province said.

All the men were killed by gunfire. The attackers then blew up the checkpost with explosives, the police official said.

The checkpoint was part of the NATO supply routes transporting goods from the port city of Karachi through Pakistan's northwestern region and tribal areas into Afghanistan.

Police told CNN that an attack a few days ago also targeted a checkpoint in the Mianwali district. Rocket fire damaged the top level of building but no one was killed in the attack.
What was the checkpoint a part of? Number of cops killed in early morning attack? What was part of the NATO supply route/ What did the attackers blow up? How many police personnel died? How many police died? What did the attackers do to the checkpost? Who blew up checkpoint?
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