Belgian police on Sunday arrested an adult and three minors over messages they exchanged allegedly plotting a jihadist attack, Paralel.Az reports citing AFP.

The four were arrested as police conducted searches at addresses in the cities of Brussels, Ninove, Charleroi, and Liege, outlets RTBF and HLN reported. No weapons or explosives were found.

Multiple attempts by AFP to contact the federal prosecutor’s office handling the case for confirmation were not immediately answered.