ISLAMABAD, Pakistan — At least 13 people were killed in a fiery collision between a passenger bus and a pickup truck carrying smuggled Iranian gasoline early Friday in southwestern Pakistan, officials said.

The deadly collision happened around 4 a.m. Friday in Killa Saifullah, a remote district in Baluchistan Province. “Thirteen people were burned to death in the collision. One person miraculously survived without any injuries,” Atiqur Rehman, the deputy commissioner of the district, said in a telephone interview.

The official said it was raining and snowing around 2:30 a.m. on Friday when officials received information about the movement of four Datsun pickup trucks carrying smuggled Iranian gasoline in the district.

“They were intercepted by law enforcing authorities, but one pickup truck managed to break through the security cordon,” he said. “Later, we learned that there had been an accident of a bus and the pickup truck.”