An investigation into a deadly terrorist attack on Moscow's Domodedovo Airport has unveiled serious flaws in the work of Russian intelligence, a high-ranking security service source said on Wednesday.
A powerful blast ripped through Domodedovo Airport's international arrivals hall on January 24, killing 36 people and injuring dozens more.
"The investigation findings show that if security officials, whose duties include ensuring transport safety, had the minimum number of informants, the terrorist attack at the airport could have been prevented," the source said.
Following the attack, Russian President Dmitry Medvedev criticized Interior Ministry and airport officials for failing to ensure security at the airport. Several high-ranking officials were fired.
A police source told RIA Novosti that the security services were aware that terrorists were planning an attack on a Moscow airport, but were unable to locate and detain the three suspects they had been searching for.
Police identified Magomed Yevloyev, a 20-year-old student from the impoverished southern Russian region of Ingushetia, as the suicide bomber on Sunday.
The Kommersant daily reported on Wednesday that Yevloyev's teenage brother and sister have been arrested in connection with the attack.
MOSCOW, February 9 (RIA Novosti)