The Taliban have not claimed responsibility for the bomb, which went off in southern Helmand province, Khaama Press said Saturday.
The improvised explosive device is a common weapon of Islamic militants targeting American and Afghan security forces in the region -- and frequently results in collateral civilian casualties.
In a separate incident at least one Afghan border protection officer was killed and three others wounded after a blast in Gulran district of Herat province. No one has claimed responsibility for the blast.
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