Brussels attacks: Three held on terrorist charges

Belgian prosecutors say three people have been ordered held on charges of participating in terrorist group activities.

They were among four people detained during Sunday searches in Brussels and the northern cities of Mechelen and Duffel.

Belgian prosecutors did not release details on the alleged terrorist actions or whether they were linked to the 22 March suicide bombings at Brussels Zaventem airport and in the Brussels' metro.

The fourth person has been released without charge, according to a statement from the Belgian Federal Prosecutor's Office Monday.

Those charged by the investigating magistrate were identified only as Yassine A., Mohamed B. and Aboubaker O.