MOSCOW, May 20 (RAPSI) – Investigators in the criminal case against Dmitriy Kamenshchik, the Domodedovo airport owner charged in the case over 2011 terrorist attack, believe that the airport’s management cut out the responsibility for ensuring passenger’s safety from the license, RIA Novosti reported on Friday.

According to investigators, Kamenshchik and several other ex-managers of Domodedovo have not provided sufficient security level that let the suicide bomber freely enter the arrival lounge and set off an explosive.

Investigators allege that the defendants in the case have introduced a “Technology of inspection at the entrances to the airport terminal of Domodedovo Moscow airport” which allowed most of the passengers to enter the building without going through metal detector.

According to the Investigative Committee official representative Vladimir Markin, these measures brought a severe decline to the airport’s security and allowed the terrorists to commit their attack.

The Moscow City Court on Wednesday upheld the house arrest of Kamenshchik; the billionaire will stay under house arrest until July 28.

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.