He added that the explosives were placed in a motorcycle and the apparent target was the police.
He added that the injured were shifted to the hospital where they were announced out of danger.
No group has claimed responsibility for the attack.
This was the fourth explosion in the country till 02:00PM Thursday. Before Kapisa’s explosion there were two explosions in Baghalan province which luckily did not have casualties but before that a suicide attack in Kabul martyred a policeman and injured 3 others.