A suicide car bombing against security guards of an Afghan private security company Saturday afternoon killed one person and injured four others in southern Afghan province of Helmand, an official said on Saturday.

"A man, driving explosive-laden car, exploded himself next to a convoy of local security firm in Kandahar-Helmand highway, killing one guard and injuring four more," Mohammad Dawod Ahmadi told Xinhua.

No groups or individuals have claimed responsibility for the incident so far.

Taliban-linked insurgency and violence, mostly in southern and eastern region, is sharply going up in the country, as more than four dozen people, including two NATO-led International Security Assistance Forces soldiers, were killed in a single day Saturday.

Source: Xinhua