Afghan officials say a roadside bomb has hit a police vehicle in southern Kandahar province, killing four police officers.
Parvez Najib, a high-ranking provincial government official, told RFE/RL's Free Afghanistan the blast occurred late on January 31 in the volatile Spin Boldak district, near the border with Pakistan.
He said one policeman was also injured in the attack.
There were no immediate claims of responsibility.
Based on reporting by AP and RFE/RL's Radio Free Afghanistan