A government administrator in Pakistan says two roadside bombs, minutes apart, struck a minibus and a motorcycle in a northwestern tribal region near the Afghan border, killing at least six people.

The administrator, Meraj Khan, says five passengers in the minivan and the cyclist were killed and four people were wounded in Friday's blasts in Mohmand tribal region.

Khan says the dead included members of a local anti-Taliban militia.

No one claimed responsibility but Pakistan has blamed local militants for previous such attacks in the area.

Mohmand lies 100 kilometers (60 miles) northwest of Peshawar, the capital of Khyber-Pakhtunkhwa province. It is also located near a militant stronghold of Khyber tribal region, where the Pakistani army has been carrying out an operation against local militants since last month.