Saudi authorities on Tuesday beheaded a man convicted of incest in the south of the medieval kingdom, the interior ministry said.Hasan Ghazwani, a Saudi national, was executed in the city of Jizan, the ministry said in a statement carried by SPA state news agency.It said Ghazwani's affair had led to a pregnancy but did not disclose their family relationship or whether the woman had delivered.It cited a saying attributed to Prophet Mohammad that stipulates death for whose who commit incest.Rape, murder, apostasy, armed robbery, drug trafficking, sorcery and witchcraft are all punishable by death in Saudi Arabia.The latest beheading brings to 74 the number of executions carried out in Saudi Arabia this year, according to an AFP count.In 2012, the country carried out 76 executions, according to a tally based on official figures.(english.al-akhbar.com)ANN.Az