Belgian Interior Minister Jan Jambon says authorities were not entirely surprised by the two attacks in Brussels that killed dozens of people. Yiming Woo reports.
Tributes have been pouring into the Belgian capital. Two suspected suicide attacks -- one at Brussels Airport and another at a metro station -- killed at least 30 people and wounded another 200 more. The blasts came four days after Belgian police arrested Salah Abdeslam, accused of playing a key role in the Paris attacks in November last year. Interior Minister Jan Jambon says authorities weren't entirely surprised. (SOUNDBITE) (English) BELGIAN INTERIOR MINISTER JAN JAMBON, SAYING: "The probability of an attack is high, so from that point of view, we can say that we are not surprised because the chance was very high. From the other side, that it happened today shortly after the arrest of (Salah) Abdeslam here in Brussels, makes it incredible too." Islamic State has claimed responsibility for Tuesday's attacks. A hunt for a man believed to have driven the bombers to the airport is underway. Islamic State has warned of "black days" for those fighting it in Syria and Iraq. Belgian warplanes have joined the coalition in the Middle East, but Brussels, home to the European Union and NATO headquarters, has long been a centre of Islamist militancy.