Police on Thursday shot dead two suspects in eastern as they were about to launch “large-scale” attacks in the country after returning from Syria, prosecutors said.
They said a third suspect was arrested in the eastern town of Verviers and that the police had carried about 10 raids in all, including in the capital Brussels, after surveillance suggested an attack was imminent.
Belgian officials said that there was no known link at this stage between the plot and a series of deadly attacks in Paris last week.
Jewish schools in Brussels and Antwerp canceled classes Friday, the Ynet news site reported.
Another official said separately that the incident in Verviers, which is close to the German border some 125 kilometers (70 miles) from Brussels, was “jihadist-related.”
US Ambassador Samantha Power made the announcement during the UN Security Council’s monthly Mideast debate, calling the status quo “unsustainable.” She urged both sides “to exercise maximum restraint and avoid steps that threaten to push Israeli-Palestinian relations into a cycle of further escalation.”
The United States and the European Union have criticized Israel’s retaliatory move in response to the Palestinian application to join the ICC, which could investigate war crimes complaints against Israel.