Story highlights The tourists are from the United States, Ireland, Britain and Germany

The convoy hit was accompanied by Afghan Security Force vehicles

(CNN) The Taliban has claimed responsibility for an attack on foreign tourists traveling in Afghanistan's western Herat province. In a text message to journalists, Taliban spokesman Qari Yousuf Ahmadi claimed responsibility for the attack saying, "the foreigners had come to Herat for a mysterious aim."

The six tourists were injured when a rocket struck the vans they were traveling in Thursday, according to Afghan Army spokesman Najibullah Najibi. An Afghan driver was also wounded in the attack.

The tourists were treated at a local hospital.

Jilani Farhad, a spokesman for Herat's governor, said the tourists were from the United States, Ireland, Britain and Germany.

The injured were among a party of 11 tourists riding in two vans when the rocket struck. They were traveling through Herat's Chest-e-Sharif district, district chief Farhad Khademi told CNN. The convoy was accompanied by Afghan Security Force vehicles, he added.

A woman was among the injured.

"We are providing assistance to British nationals involved in the attack in Herat and are in close contact with the local authorities," Britain's foreign office said in a statement.

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