an Iranian who beheaded his two sons after they witnessed him murder a woman was...

an Iranian who beheaded his two sons after they witnessed him murder a woman was sentenced to hang by a Tehran court. The man, known only as Ismail, pleaded guilty to beheading and dicing up the bodies of two adults and severing the heads of his sons, aged 7 and 11. 
"Ismail suspected his wife Masoumeh of having an affair with a man called Ebrahim. He then forced her to marry him in a lavish ceremony attended by some 700 guests," Naser Seraj, the head of penal courts in Tehran province, said. Ismail then killed Ebrahim and his sister Fatemeh.
"I had beheaded sheep before and I felt Fatemeh was a sheep so I cut her head off and chopped her body to small pieces. I placed her head in a tray which scared the life out of my children," he was quoted as saying by Etemad newspaper.
After learning that his sons had witnessed Fatemeh's murder, Ismail beheaded them. Seraj said Ismail received two death sentences for killing the adults. Under Iran's Islamic law a father need only pay blood money for killing his children. Masoumeh was sentenced to death by stoning for her affair with Ebrahim. An Afghan man, suspected of complicity in the crime, was also sentenced to death.