Kandahar hit by 2nd blast: reports

An explosion has been heard in the southern Afghan city of Kandahar a day after a massive bomb blast killed at least 43 people, according to media reports.

There is no immediate word on casualties.

Al-Jazeera's English-language service reported the blast occurred in the centre of Kandahar city and is believed to have been caused by a rocket.

Taliban militants have launched several attacks in Kandahar, which is their base in southern Afghanistan, over the past few years.

On Wednesday, a purported Taliban spokesman denied the militant group was responsible for Tuesday's attack that left more than 60 injured and damaged dozens of buildings.

About 2,800 Canadian troops are in southern Afghanistan, most of them stationed at a large NATO base on Kandahar's outskirts. But militants control districts immediately to the west of the city.