Belgian authorities detained Monday and subsequently released 5 people, including two brothers, after two days of raids related to the November 13 Paris attacks.
The federal prosecutor's office said two people were detained following a house search Monday in the Laeken district of Brussels. On Sunday evening, another Brussels house was searched on orders from an investigating judge specializing in terrorism. Two brothers found there were taken in for questioning, as well as a friend.
The prosecutor's office said an analysis of phone records led to Sunday's search. Authorities said they found no weapons or explosives at either residence, and did not identify those detained.
The investigating judge will decide later on whether to keep the five in custody.
Following the attacks in Paris, the focus of the investigation turned to Belgium, where several people suspected of having aided the attackers have been arrested.
Fugitive Brussels native Salah Abdeslam, who is suspected of direct involvement in the Paris attacks, is still at large.
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