The Swedish and Belgian prime ministers have paid tribute to two Swedish men shot dead by a gunman in Brussels on Monday night, as authorities scrambled to work out how the attacker had slipped through the net.
In Brussels on Wednesday, the Swedish prime minister, Ulf Kristersson, and his Belgian counterpart, Alexander De Croo, took part in a brief ceremony for the victims, laying wreaths and a Swedish football scarf and jersey among bouquets of flowers.
