Dozens are dead and over 100 are wounded after an explosion at Moscow’s Domodedovo airport. While the exact cause of the explosion has not been established, investigators say they suspect a suicide bomber. The blast occurred in the baggage claim of the arrivals hall, where witnesses say thousands of people were gathered. Domodedovo airport is a popular airport among travelers, but it has been criticized for its security procedures. In 2004, two suicide bombers from the Dagestan region were able to board flight a flight and detonate their bombs in mid-air, killing everyone on board.