Kabul, Afghanistan (CNN) At least six people were killed, including two Afghan soldiers, when a car bomb exploded Saturday in Afghanistan's southern Helmand province, an Afghan official said.

The explosive-laden vehicle targeted an Afghan National Army base in Nadali District, Mohammad Radmanish, deputy spokesman for the Afghan Ministry of Defense, told CNN. A woman was among the civilians killed, he said.

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No one immediately claimed responsibility for the attack, the latest in a series to hit the country since the start of the year.

A Taliban attack in Afghanistan's southeastern Ghazni province earlier this month claimed 14 lives , including that of a district governor.

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