No further details about the special protective measures have been provided, due to the ongoing security threat.
The Midi police division covers the southwestern areas of Anderlecht, Saint-Gilles and Forest, and is home to a sizable Muslim population.
Reports have emerged that city police refused to go on patrol unarmed on September 1, as required by local regulations on the first day of the school year.
In January, Belgium increased its terrorist threat level to the second-highest grade following a series of deadly attacks in Paris, France.
Belgium accounts for the highest per capita number of foreign fighters in Iraq and Syria of any Western nation, with 440 militants out of a population of 11.4 million, according to the International Center for the Study of Radicalization and Political Violence.
