Khashoggi was killed after entering the Saudi consulate in Istanbul on Oct. 2, 2018.
Saudi Arabia enforces basic Islamic laws, which allow a death penalty to be commuted if a murder victims family has forgiven the killers or accepted a payment, known as diya in Arabic.
Mondays commuted sentences come after the sons of Khashoggi said in May they had forgiven their fathers killers.
These are the final verdicts and were issued after the relatives of the deceased dropped their legal right, the kingdoms top prosecutor said in a statement on Monday.
Three others were also convicted in the case, and were sentenced to between seven and 10 years in jail.
Turkey claims Khashoggi was murdered by a Saudi hit squad and his body was dismembered after he entered the consulate to obtain paperwork to marry Hatice Cengiz, who was waiting for him outside.
Saudi Arabia has repeatedly said that the Washington Post columnists death was a rogue operation and denied that powerful Crown Prince Mohammed bin Salman, widely viewed as the kingdoms de facto ruler, was involved.
Khashoggi was once close to the Saudi royal family but became a vocal critic of Mohammed. His remains were never found. (dpa/NAN)
Source: NAN News