RIYADH (Reuters) - A Saudi court of cassation upheld a ruling to behead and crucify a 22-year-old man convicted of raping five children and leaving one of them to die in the desert, newspapers reported on Tuesday.

The convict was arrested earlier this year after a seven-year old boy helped police in their investigation. The child left in the desert after the rape was three years old, Okaz newspaper said.

International rights groups have accused the kingdom, the birthplace of Islam, of applying draconian justice, beheading murderers, rapists and drug traffickers in public. So far this year about 40 people have been executed in Saudi Arabia.

In Saudi Arabia, crucifixion means tying the body of the convict to wooden beams to be displayed to the public after beheading.