Belgium charged a man with planning to commit murder in a terrorist attack and released his brother after a series of house searches yesterday, federal prosecutors said.
For the time being, there was no connection with the attacks at Brussels airport and the metro on 22 March, in which 32 people were killed, the prosecution office said today.
Nourredine H. was detained with his brother Hamza H. on suspicion of planning a terrorist attack somewhere in Belgium.
A judge today charged Nourredine with attempting to commit terrorist murder and participation in the activities of a terrorist organisation, and extended his custody.
His brother was released without charge.
Police carried out seven house searches in the region of Mons and a further house search in Liege yesterday evening. No weapons or explosives were found.
Brussels, home to European Union institutions and the headquarters of NATO, is on a security alert level of three out of four, a "serious" status with a "possible and probable" threat.