At least four civilians were killed and five others were wounded in a blast in Kabul city on Tuesday afternoon, police confirmed in a statement. 

The blast occurred about 2:50 pm local time in Sar-e-Chawk area on Maiwand Street in Kabul's PD1, the statement said. 

“The type of the blast and the target is not yet clear” the statement said, adding that "investigations are underway.” 

No group including the Taliban has claimed responsibility for the blast.