Noura Bint Khalaf Al-Harbi was found guilty of murdering her mother-in-law by setting her on fire while she slept after a dispute between the two.
Noura Bint Khalaf Al-Harbi was beheaded in the Saudi capital, Riyadh. She was the first female to be beheaded by the government this year, and number 13 so far since the beginning of the year.
According to Saudi law one can be beheaded for drug trafficking, murder, rape and armed robbery. The beheadings are carried out publicly with a sword.
During 2004 the Saudis executed 35 people for various crimes, down from 53 people in 2003.