Belgian grenade attack

Shattered glass in a window after the attack in Place Saint-Lambert, Liege, Belgium.  (Robin Utrecht / EPA)

Two people comfort each other as victims of the tragedy are commemorated in Place Saint-Lambert, Liege, Belgium.  (Robin Utrecht / EPA)

People gather to remember victims of the tragedy in Place Saint-Lambert, Liege, Belgium.  (Robin Utrecht / EPA)

A photographer takes photos of the car used by Nordine Amrani, 33, who threw grenades in the Place Saint-Lambert a day earlier.  (Robin Utrecht / EPA)

People display candles in a broken bus shelter, one of the targets of the attack at Place Saint-Lambert in Liege, Belgium. The lone gunman armed with grenades who went on a murderous spree in the city shot himself in the head after killing three youngsters and a woman in the crowded square, the prosecutor said Wednesday. “Nordine Amrani committed suicide with a bullet to the head,” said Daniele Reynders at a press conference. “He left no message to explain his act.”  (Philippe Huguen / AFP / Getty Images)

A body suspected to be that of the gunman who opened fire on a square packed with children and Christmas shoppers in the eastern Belgian city of Liege lies on the ground.  (Michel Krakowshi / AFP / Getty Images)