BBC NEWS | Americas | US challenged over ’secret jails’

Two Yemeni prisoners have claimed they were held in secret, underground US jails for more than 18 months, Amnesty International has said.

The human rights group has called on the US to reveal details of the alleged secret detention of suspects abroad.

Amnesty has said it fears the case is part of a “much broader picture” in which the US is holding prisoners at a network of undisclosed locations.

The US state department had no immediate comment to make.