The bomb that did not explode during this week's terrorist attacks on the Brussels airport was the most powerful one prepared for the attack, Belgian federal prosecutor Frederic Van Leeuw says.
The bomb was abandoned by a suspect who is still on the run.
"His bag contained the most significant explosive charge," Van Leeuw says.
"Shortly after the arrival of the Army's bomb disposal unit, this bag exploded because of the explosives' great instability," the prosecutor adds. "Luckily, no one was injured thanks to the professionalism of the participants."