Russia grounds Su-27 jets after crash

Russia has grounded its Sukhoi Su-27 fighter jets while a crash of one is investigated.

(CNN)The Russian air force has grounded its fleet of Sukhoi Su-27 fighter jets until determining what caused one of the planes to crash on Thursday, killing the pilot, the government-run Tass news agency said.

The warplane, part of the Russian Knights aerobatic team, crashed near Moscow after the team took part in the opening ceremony for a monument to aviators in Ashukino, Tass said.