The death penalty is provided for by the Criminal Code...

The death penalty is provided for by the Criminal Code and the legislation on civil disturbances for armed robbery, murder, treason, and offenses against the State. Death sentences for crimes such as murder are usually carried out by hanging, but firing squads are sometimes used to kill armed robbers and convicted traitors. On February 27, 1999, former military ruler General Olusegun Obasanjo won the presidential elections, and Nigeria resumed membership of the Commonwealth on May 29, when the elected government took power to end 15 years of military rule in the country. Nigeria was suspended from the Commonwealth in 1995 after late dictator Sani Abacha ordered the execution of Ken Saro-Wiwa and the Ogoni minority rights activists. President Obasanjo had faced a death sentence for allegedly plotting a coup in 1995, but instead was sentenced to 15 years in jail and only released after the mysterious death in 1998r of Nigeria's then military ruler, General Sani Abacha. Obasanjo, who himself benefited from that pardon, had on assuming office as president in May 1999, ordered the release of all prisoners awaiting trial for offenses not including murder, robbery and other under the "serious category."