A truck caught fire near a northern polling station, causing no casualties but some confusion in a nation on edge as it holds its first-ever presidential election amid a threat of Taliban violence.

A Western official said on condition of anonymity that a bomb had gone off at a polling station in the northern city of Mazar-e-Sharif (search), but peacekeeping officials and the governor in control of the town said no such bombing had occurred.

Lt. Cmdr. Ken Mackillop, a spokesman for the peacekeepers, said there had been a truck fire at a polling station in the northern city of Maimana (search), but that it did not cause any casualties.

A spokesman for Balkh Gov. Atta Mohammed, Ahraf Nadeem, also said there had been no significant violence in the northern areas.