Belgian police is on the lookout for a teenager who was featured in a video posted on Memri TV, singing a song with lyrics that said: "Annihilate the hateful Christians, kill them all. Do not leave a single one of them."
The boy was identified as the 17-year-old son of a radical imam, El Alami Amaouch.
Amaouch is an imam at a mosque in Dison village near Verviers, where an anti-terrorism operation was carried out in 2015. Belgian authorities said that the terrorists in Verviers who were thwarted last year wanted to kidnap a high-ranking official and make a live video of his beheading.
The video with the boy singing was also shot in Verviers, according to media reports. His name was not disclosed in the media.
There have been repeated attempts to deport Amaouch, the boy's father, but he appealed to stay in Verviers.
The suspected leader of the November 2015 Paris massacre, Abdelhamid Abaaoud, may have been trained in Verviers also, Fox News reported.
Recently, two policewomen were wounded in southern Belgium when an assailant shouting "Allahu akbar" (God is the greatest) attacked them outside Charleroi police station, 40 miles from Brussels. One woman sustained deep wounds to her face and the other was slightly injured.
In France, French priest Jacques Hamel of Saint-étienne-du-Rouvray church was brutally murdered by two attackers who also took two nuns and two worshipers hostage. Both men were killed by the police.