“We strongly condemn the senseless destruction and violence at the demonstration today in Brussels, including on our premises,” he wrote on Twitter.
Borrell accompanied the publication with a photo of broken glass in one of the buildings of the office of European diplomacy.
He expressed his gratitude to the police officers for their efforts aimed at restoring order on the streets of the Belgian capital.
Earlier it was reported that protests against sanitary restrictions in Brussels, with the participation of more than 50 thousand people, ended in pogroms in the European Quarter and on the surrounding streets.
The police reported the arrest of several dozen people, and up to ten people were injured.
After clashes between protesters and law enforcement officials, the police had to use water cannons and tear gas.