A suicide bomber has blown himself up close to a truck taking children to school in north-west Pakistan, wounding at least five children, the army says.
The car used in the attack was blown to pieces
The attack took place near the Kamra military base north-west of Islamabad.
The driver and a guard on the military truck, which was carrying more than 30 school children, were also injured.
The attack comes a day after a suicide bomber killed at least six people, two of them children, at a checkpoint in Swat in North West Frontier Province.
A Pakistani military spokesman told reporters that the children had been travelling to school in an air force truck when they were attacked at Kamra, some 45 miles (75km) north-west of the capital.
"This barbaric attack shows how cruel the terrorists are," Maj Gen Arshad Waheed was quoted as saying by the Associated Press.
Hundreds of people have been killed in a wave of attacks since troops ousted armed militants from the radical Red Mosque in Islamabad in July. At least 100 people died in the operation.
Sunday's suicide bombing in Swat came after the army said it had killed nearly 300 pro-Taleban militants there over the past two weeks.
There is no independent confirmation of the casualty figures given by the army.
Troops have driven the militants from a series of small towns and villages where they had tried to implement strict Islamic law.
The militants say they have made a tactical withdrawal.
The fighting in Swat is the first serious insurgent threat from pro-Taleban forces in what is considered a settled area of Pakistan.
Until now the army has focused on fighting militants mainly in the largely autonomous Waziristan tribal areas along the Afghan border.