A suspicious envelope containing a white powder discovered in a large mosque in Brussels has turned out to be flour.
Anne Wibin, the spokeswoman of the Brussels fire department, told journalists on November 26 that the department had received a call from the mosque from a person saying they believed that they had found anthrax powder.
Wibin said tests proved the substance was not anthrax, with a police official later saying it was flour.
Police and decontamination crews had converged at the Islamic and Cultural Center of Belgium, near the headquarters of the European Union, to secure the scene.
Brussels has been under high security alert since November 21 following what officials described as credible threats of a "Paris-like attack," referring to the November 13 terrorist attacks in the French capital that left 130 dead and hundreds injured.
Since those attacks, which involved alleged terrorists from Belgium, a previously unknown group called Christian State has issued threats against Belgian mosques.
Some 500,000 Muslims live in Belgium.