Lawyers say Alieu Kosiah was also found guilty of the additional charge of crimes against humanity, which had been added by prosecutors.

The former rebel commander was found guilty of war crimes in 2021.

The case was the first of its kind in Switzerland, or anywhere else, for atrocities committed during Liberia's multiple civil wars which lasted from 1989 to 2003.

Hundreds of thousands of people were killed and mutilated during the conflict.