Intelligence officials say the number of Pakistani soldiers killed in a roadside bombing of an army convoy in the northwest has risen to 14.

The officials say another 20 troops were wounded in the attack Sunday near Dosalli village in the North Waziristan tribal area. One vehicle was completely destroyed.

The officials spoke on condition of anonymity because they were not authorised to talk to the media.

Pakistani military officials confirmed the bombing but said four soldiers were killed and 11 others wounded.

North Waziristan is the main sanctuary for al Qaeda and Taliban militants in Pakistan.