Singapore has detained eight Bangladeshi men planning to stage terror attacks in their home country, the city state said, the second group of Bangladeshis investigated in the past six months.
The departure hall at Brussels airport, hit in March by a deadly double suicide bombing claimed by the Islamic State group, will partly reopen on Sunday, the management said.
Cutting edge gadgets are on show at Security and Counter Terror Expo, where transport security provided a key focus following the terror attacks in Brussels last month.
Indian Prime Minister Narendra Modi said his country shared Belgium's pain over the Brussels attacks as he added a wreath of white flowers to a sea of tributes outside Maalbeek metro station.
Airplane hijackings such as the one that unfolded on Tuesday involving an Egyptian airliner have become relatively rare since the September 11, 2001 terror attacks led to increased security.