Sierra Leone's U.N.-backed war crimes tribunal has accused former Liberian President Charles Taylor of backing an attempt to kill Guinea's president.

The court's chief prosecutor David Crane says the exiled former leader ordered the assassination of Guinean President Lansana Conte in January to punish him for allegedly supporting rebels in Liberia.

A spokesman for Mr. Taylor has denied the charge.

He has lived in exile in Nigeria since 2003 when he stepped down under pressure from advancing rebels and the United States.

Before Mr. Taylor left office, the special court indicted him on war crimes charges for backing rebels during Sierra Leone's 10-year civil war.

Meanwhile, the United States House of Representatives is expected to pass a resolution calling on Nigeria to hand Mr. Taylor to the tribunal.

Some information for this report provided by Reuters, AFP and AP.