Authorities on Monday beheaded a Saudi woman convicted of fatally shooting her husband and setting his body on fire. Laila Bin Hamdan al-Shammari was executed in the northern city of Hayel. The Interior Ministry said the woman killed her husband after a dispute. It did not explain the nature of the argument. Saudi Arabia follows a strict interpretation of Islam under which people convicted of murder, drug trafficking, rape and armed robbery can be executed - usually with a sword. According to an Associated Press count, the execution was the 24th beheading this year in Saudi Arabia. In 2008, 102 people were beheaded.