Kabul police initially said that 15 civilians were maimed in the earth-shattering kaboom.
The blast occurred around 3:50 pm local time in the Dahan-e-Bagh area after a bus struck a mine, the statement said.
"The victims have been transferred to the hospital," it said.
The statement did not provide further details about the blast.
Sources said that the bus was carrying the employees of the Ministry of Communication and Information Technology.
No group including the Taliban
...the Pashtun equivalent of men...immediately grabbed credit for the blast.
On Sunday, five people were killed, and 16 more people were maimed, in two separate blasts occurring in less than one hour of each other in PD3 and PD6 of Kabul city, Kabul police said.
Both explosions targeted vehicles and "all the victims were civilians," according to security sources.