KANDAHAR, Afghanistan (Reuters) -A Taliban bomb attack on a convoy of Canadian troops killed at least two Afghans in the heart of the southern Afghan city of Kandahar on Sunday, according to Afghan police and doctors.

“Initial reports indicate that three coalition soldiers were wounded in the incident,” said Lieutenant-Colonel Jerry O’Hara, a spokesman based in Kabul with the U.S.-led coalition force.

Witnesses said they saw four soldiers being stretchered away.

O’Hara said the explosion was caused by a roadside bomb, but police said it was a suicide attack and witnesses described how a Toyota saloon rammed into a Canadian vehicle at a crossroads.

Doctor Abdul Qaoum, at Kandahar’s main hospital, said at least two civilians were killed and nine others wounded.

Taliban spokesman Qari Mohammad Yusuf claimed responsibility.

“This attack is part of our jihad and we plan to carry out more such attacks,” Yusuf told Reuters by satellite telephone from an undisclosed location.

Foreign troops cordoned off the site.

Taliban fighters have launched several suicide attacks, mainly targetting U.S.-led troops and NATO peacekeepers during the past few months, but they have not caused major casualties.