Suspected Taliban members have set off a bomb next to a fuel tanker parked outside the main US military base in southern Afghanistan, setting off a chain of large explosions that destroyed five tankers and injured three drivers, officials said.

The attack took place just after 3am, while Pakistani and Afghan drivers waiting to deliver fuel to the US base at Kandahar airport were sleeping, said General Muslim Ahmed, the local Afghan military commander. No American soldiers were injured.

One of the injured drivers, Sher Alam, told The Associated Press he was woken by the initial blast and ran for his life.

"I was sleeping at the time and suddenly I heard an explosion. When I woke up there was a huge fire engulfing the fuel tanker near mine. We all ran away and there were more explosions," said Alam, whose feet and hands were injured by flying debris.

Tight security measures mean long waits for drivers delivering fuel to US bases in Afghanistan. Alam said he had been sleeping in his truck for 10 days waiting his turn to enter the base.

Ahmed said American troops arrived shortly after the blasts to put out the fire. No arrests were made, but suspicion fell on the Taliban.

"The Taliban perpetrated this terrorist activity," the general said.

By midmorning on Sunday, black smoke still billowed from the charred hulls of the tankers.

PHOTO CAPTION

Afghan soldiers remove the wreckage of damaged tankers from the explosion site in Kandahar, Afghanistan on Sunday, April 17, 2005. (AP)