Eight Bangladeshi nationals were beheaded Friday for their part in an armed robbery in which a security guard was killed. Mamoun Abdulmenan, Farouk Jamal, Suman Meah, Mohammed Suman, Shafiq Al-Islam, Masoud Shamsulhaq, Abu Hussein Ahmed and Muteer Al-Rahman were executed in the capital Riyadh, said an Interior Ministry statement. The men were convicted of robbing a warehouse and killing the security guard, Hussein Saeed Mohammed Abdulkhaleq, an Egyptian national. Three other men were sentenced to prison terms of varying lengths, the statement said. Meanwhile, two Saudi men convicted of murder were executed by the sword in the northern city of Tabuk. Karim Bin Farhan Al-Messeyden Al-Atawi was found guilty of stabbing to death brothers Hammud and Saud Ali Al-Atawi, the ministry said. In a separate case, Ahmed Bin Awdeh Al-Atawi was convicted for having shot dead an Afghani, Mohammed Zaki Zaher Khan, with a machine gun, the ministry said in a separate statement. Around one third of Saudi Arabia's population of over 27 million are estimated to be foreigners, mainly Asians. Rape, murder, apostasy, armed robbery and drug trafficking are all punishable by death in the Kingdom governed by the Shariah law.