Kabir Ahmad, the district chief of Parwan province’s Bagram district, said Wednesday that scores of people had gathered around the fuel truck to collect fuel that was leaking.

He said as the people massed, a bomb inside the truck went off at about 8 p.m. Tuesday.

Parwan provincial hospital chief Khalil Farhangi says at least three people were killed on the scene.

Kabir Amiri, who oversees all of Kabul’s hospitals, says 25 people were wounded and two subsequently died, raising to five the death toll, so far.

The site of the explosion is about 25 miles (40 kilometers) north of Kabul.