Washington - A grand jury handed down a 10-count indictment against "American Taliban" John Walker Lindh on Tuesday that included charges which could carry multiple life sentences if he is convicted.

US attorney general John Ashcroft said the indictment charged the United States national, who was captured while fighting in Afghanistan, "as an al-Qaeda-trained terrorist who conspired with the Taliban to kill his fellow citizens".

The jury formalised six charges that had been outlined in the federal government's criminal complaint against Lindh and added four more.

The new charges are conspiracy to contribute services to al-Qaeda, contributing services to the organisation, conspiracy to supply services to the Taliban, and using and carrying firearms and destructive devices during crimes of violence.

Walker had already been charged with conspiracy to murder US citizens or US nationals, two counts of conspiracy to provide material support and resources to designated foreign terrorist organisations, two counts of providing material support and resources to terrorist organisations, and one count of supplying services to the Taliban.

"If convicted of the charges, John Walker Lindh could receive multiple life sentences, six additional 10-year sentences, and a further 30 years," Ashcroft said. - Sapa-AFP