Domodedovo airport paid compensation to 34 victims in the criminal case launched after 2011 terror attack that left 37 dead, the airport’s press office reported on Friday.

Domodedovo reported first payments to the victims through a specially established charity fund.

Lawyer Igor Trunov said in turn that the victims are going to take back their civil lawsuits in Russia which were filed during preliminary investigation of the case when they receive compensation.

About 30 people more are expected to be compensated by June 15.

The Domodedovo airport owner Dmitriy Kamenshchik and several other ex-managers have been charged in the case over 2011 terrorist attack. According to investigators, they have not provided sufficient security level that let the suicide bomber freely enter the arrival lounge and set off an explosive.

A suicide bomber detonated a bomb in the Domodedovo Airport’s international arrivals hall, killing 37 people and injuring 172, on January 24, 2011.

Doku Umarov, Russia’s most wanted terrorist at the time, claimed responsibility for the attack. Altogether, 28 men connected with the terrorist organization called the Caucasus Emirate were linked to the attack, according to the investigators. Seventeen of them were killed in special operations in 2011, and four were detained.

In November 2013, a Moscow Region court sentenced three men to life in prison and a fourth man to 10 years for their role in the suicide bombing.