Belgian investigators have recovered a Kalashnikov AK-47 assault rifle in the Zaventem airport in Brussels, seeming to confirm reports that gunfire was heard shortly before the first of two explosions in the airport.
At least 14 people were killed in the attack on the airport Tuesday morning, with an additional 20 confirmed dead at an attack an hour later targeting the Brussels metro subway system. A bomb went off in the Maalbeek metro station, just a few hundred yards away from the seat of government of the European Union.
The Belgian royal palace has been evacuated after an abandoned suitcase was discovered nearby.
According to the Daily Mail, eye witnesses reported that at least one of the bombs had been stored in a suitcase.
Many of those wounded suffered injuries in their lower extremities, lending credence to the claim that at least one bomb had detonated while inside a suitcase.
A fourth explosion was heard in central Brussels hours after the initial attacks in Maalbeek metro station and Zaventem airport. Belgian police have reported that it was a controlled explosion at Vrije University. The circumstances surrounding the incident are unclear.