Moscow - Three men were sentenced to life in prison on Monday and a fourth to 10 years for their roles in the 2011 suicide bombing of a Moscow airport, which killed 37 people.
Bashir Khamkhoyev and brothers Islam and Ilez Yandiyev were given life sentences by a court in Krasnogorsk, a city on the north-western outskirts of Moscow. Akhmed Yevloyev, a brother of the purported bomber, was given 10 years, the court said.
The court earlier on Monday had convicted the four men on terrorism charges.
The bombing in January 2011 was carried out by a man who walked into the arrivals hall of Domodedovo International Airport, Russia's largest airport, and blew himself up. The explosion injured 172 people.
Investigators identified the bomber as Magomed Yevloyev, a native of the North Caucasus region of Ingushetia. They have also charged local Islamist insurgency leader Doku Umarov with recruiting and training Magomed Yevloyev for the attack.
The Yandiyev brothers were accused of driving Magomed Yevloyev to Domodedovo while the other defendants were found guilty of helping him in Ingushetia, the Russian Investigative Committee said.
Islam Yandiyev had asked for a pardon while the three remaining defendants denied guilt, Russian news reports said.