The casualties include training centre members, police personnel and civilians. The toll might increase further, the official told Xinhua news agency.
The attack took place in the provincial capital of Gardez city, 100km south of Kabul, reports Xinhua news agency.
The number of attackers was six, all equipped with suicide vests and light arms, according to security forces.
No group has so far claimed responsibility for the attack.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
About VDC
Doraiah Chowdary Vundavally is a Software engineer at VTech . He is the news editor of SocialNews.XYZ and Freelance writer-contributes Telugu and English Columns on Films, Politics, and Gossips. He is the primary contributor for South Cinema Section of SocialNews.XYZ. His mission is to help to develop SocialNews.XYZ into a News website that has no bias or judgement towards any.