"Today, Russian strike aircraft used two BETAB-500 bunker buster bombs weighing 500 kilograms [over 1,000 pounds] each against ISIL targets [in Syria]," Col. Igor Klimov told journalists in Syria.
Klimov said the bombs were delivered by Russian Su-24 Fencer attack jets.
"BETAB-500 bombs are used to destroy extremely protected and fortified underground bunkers, they are not dropped on cities," Klimov noted.
A wide range of missiles and bombs equipped with advanced guidance systems are currently being used by Russia in its air campaign against terrorists in Syria.
The concrete-piercing BETAB-500 bombs are equipped with a jet booster, which allows the bombs to completely destroy any underground installation.
BETAB-500 ShP / Concrete Piercing Bomb / Russian Air Force – some details http://t.co/fJg6CmaB8T pic.twitter.com/2eZso1PqNL
— Su-27 Flanker (@Suhoi27flanker) 5 октября 2015
