A man who killed nine women in a case that caused outrage in Nigeria has been sentenced to death in the southern city of Port Harcourt.

Prosecutors say 26-year-old Gracious David-West strangled his victims in hotel rooms across Nigeria between July and September 2019.

Justice Adolphus Enebeli said he is to die by hanging.

The death penalty is not commonly carried out in Nigeria – the last three executions were in 2016.

One of his alleged victims survived the attack, but was not a witness during the trial.

Authorities say her whereabouts are unknown despite being told not to leave the state.

Police say he also confessed to the murders of six other women elsewhere but he was not charged for those murders for lack of evidence.

Authorities say the pattern of the murders point to a serial killing – he had sex with his victims before binding their arms and feet with strips of white sheets.

He also used sheets to strangle them, the court heard.

Several of his victims were sex workers.