A Libyan court sentenced slain dictator Moamer Kadhafi's son Seif al-Islam and eight other defendants to death on Tuesday for crimes during the 2011 uprising.

Former intelligence chief Abdullah Senussi and Kadhafi's last prime minister Al-Baghdadi al-Mahmudi were also among those sentenced to death.

The trial, which opened in the Libyan capital in April last year, has been dogged by criticism from human rights watchdogs and an unresolved dispute with the International Criminal Court in The Hague over jurisdiction in Seif al-Islam's case.