Saudi Arabia has beheaded a Sudanese man convicted of murdering a compatriot in the capital Riyadh

Sadiq Abdel Mullah was sentenced to death for the fatal stabbing of Ahmed Mohammed. His beheading raised to 22 the number of people executed in Saudi Arabia in 2011. In 2010, 27 executions were reported in the oil-rich kingdom, down from 67 in 2009 and 102 in 2008. Rape, murder, apostasy, armed robbery and drug trafficking are all punishable by death under the Muslim kingdom's strict interpretation of Islamic sharia law.