Khyber Pakhtunkhwa authorities despatched the third convoy of aid to Parachinar early on Thursday. However, the rocket attack put an end to the plan.
Rockets were fired from two sides on the convoy, a government official told The Khorasan Diary, an Islamabad-based think tank and digital media outlet covering security and conflict.
At least six out of the 35 trucks in the convoy were attacked. However, no casualties have been reported so far.
The latest convoy was made up of trucks of essential items including food and medicine for the region. The supplies will bring much-needed relief for Parachinar and around 100 villages in the surrounding area which have been cut off from the rest of the country for over three months due to a violent conflict between Shia and Sunni tribes.
As a result of being isolated, the region has run out of everyday items and is eagerly awaiting aid.
Authorities have already sent two convoys of aid to the district after a peace agreement earlier in January. The peace agreement between the tribes was brokered by a Jirga led by the district administration and provincial government.
As a result of the agreement, the government has also begun the process of demolishing bunkers used by the warring parties in the conflict.
However, hundreds of trucks have been stranded in Thall as security clearance is needed for them to allow to pass into Kurram.
Tribal leaders have also complained that the small number of trucks trickling into the district at lengthy intervals is not enough to sustain the population of hundreds of thousands of people.
Meanwhile, in Kurram, students have been unable to go to schools and hospitals and pharmacies are out of function due to lack of medicines.