Two top leaders and four commandos of the U.S.-backed Nicaraguan Contras were found guilty by their own military tribunal of human rights abuses after a murder, tortures and rapes at one of the rebels' base camps in Honduras, a Contra spokesman said Friday.

Bosco Matamoros, a Washington spokesman for the rebels, said the expulsion was the most severe action the military tribunal could take. Honduran officials have told the rebels, who came across the border after a cease-fire was called in Nicaragua, that they cannot set up prisons.