This week, activists sprayed graffiti and put up posters on the building of the Immigration Department (DVZ) in the Boulevard Pachéco in Brussels, with messages calling for open borders and the abolition of the European Border Agency Frontex.
The graffiti slogans on the windows of the building read "all refugees welcome" and "abolish Frontex", but it is currently unclear who is responsible.
"Disrespectful. At the Immigration Department, our people work on a correct migration policy," State Secretary for Asylum and Migration Sammy Mahdi reacted on Twitter.
"If you want to live in an open border world and want to do away with Frontex: a) take part in elections and find a majority b) find a desert island," Mahdi added. "But leave the rest alone."
Earlier this week, the Facebook page 'No one is Illegal' also shared images of someone applying paper pages with similar messages ("Criminalising sans-papiers is criminal" and "abolish closed centres") to the same building.