The death toll from a series of bomb attacks in northwest Pakistan has risen to 15, officials said on Friday.
More than 100 people were also wounded in the cities of Peshawar and Dera Ismail Khan, sparking widening fears of mounting militant revenge for Pakistan's latest offensive against Taliban fighters in the region.
A policeman and a civilian died overnight in hospital, raising the death toll in the attacks to 15, police and hospital officials told AFP.
In Peshawar, bombs planted in two motorcycles exploded in quick succession, killing eight people and wounding around 100 more -- 10 of them seriously.
Shortly afterwards, a suicide bomber rammed a car packed with explosives into a police checkpoint on the outskirts of the city, killing three people and injuring 15 people.
In the fourth attack, four people were killed and 13 wounded when a suicide attacker exploded a rickshaw near a police checkpoint in the city of Dera Ismail Khan, about 300 kilometres south of Peshawar.
Dera Ismail Khan and Peshawar lie on the fringes of Pakistan's lawless tribal areas along the border with Afghanistan, where Washington says Al-Qaeda and Taliban militants have carved out safe havens to plot attacks on the West.