Belgium's federal prosecutor says two persons have been arrested on suspicion of planning attacks in Brussels during the holidays.

The prosecutor's office said Tuesday that the two were arrested following searches Sunday and Monday in the Brussels area, the Liege region and Flemish Brabant. The announcement did not say whether the suspects were male or female.

During the searches, the office says military-type training uniforms, propaganda materials from the Islamic State group and computer material were seized and are being examined. However, no weapons or explosives were found.