Islamabad , Pakistan ( CNN ) -- Attacks in Pakistan on trucks carrying fuel for NATO troops in Afghanistan damaged about two dozen trucks and killed two people Friday , authorities said . Militants torched dozens of supply trucks in the southern Pakistani province of Sindh Friday morning , police said . No one was hurt , but 25 of 27 trucks were damaged , officials said . On Friday night , attackers with automatic weapons struck a NATO supply truck , killing two people and damaging contents , Pakistani police said . Saeed Ahmed , a senior police official in the Khuzdar district of Baluchistan , said the truck was apparently separated from a convoy heading to Afghanistan . The Friday morning attack took place in the Shikarpur district when four militants used fire crackers and petrol bombs to damage the trucks , said Muhammad Hanif , a senior police official in the district . The trucks carry crude , diesel and petrol for NATO troops in Afghanistan . Meanwhile , NATO convoys were still barred Friday from going into Afghanistan through the Torkham Gate checkpoint . The supply route to Afghanistan has been closed by the Pakistani government after fighting that led to the deaths of three Pakistani soldiers , and a military spokesman said Thursday that United States is hopeful the situation is only temporary . Pakistan banned NATO supply convoys from entering Afghanistan after the deaths of the three soldiers , whom the government says were killed in Pakistani territory during fighting between NATO troops and militants , according to a military official from the NATO-led command in Afghanistan . Lt. Col. John Dorrian , an ISAF spokesman , said the Torkham Gate in the Khyber Agency has been closed since about midday on Thursday . Chaman Gate , the other border crossing between Pakistan and Afghanistan , remains open . `` We do n't think it 's a very serious problem , '' Dorrian said . `` It 's a throroughfare we use a lot so it is significant . But we can work around it . '' `` We do expect these matters to be resolved . '' Supply convoys are all-important for the Afghan war effort , and officials from NATO 's International Security Assistance Force ( ISAF ) were trying to persuade Pakistan to lift the ban . Coalition forces rely heavily on convoys from Pakistan to bring in supplies and gear . Torkham Gate is one of the main ports of entry for material coming into the war zone . But it is not the only way of getting supplies in . Khyber Agency is one of the seven districts in Pakistan 's tribal region . About half the cargo that flows into Afghanistan comes in via one of the two gates from Pakistan , the Defense Department says . Another 30 percent uses two major routes through Kazakhstan and Uzbekistan , one via Russia and the other via the Caucasus . The remaining 20 percent -- mostly sensitive items like weapons , ammunition and other critical equipment -- comes in by air . CNN 's Frederik Pleitgen and Nasir Habib contributed to this report .
NEW : Two attacks damage trucks and kill two people . Militants use petrol bombs to damage 25 trucks . About half of U.S. cargo comes into Afghanistan via Pakistan , Pentagon says . Torkham Gate remains closed .