An explosion occurred at a metro station in Brussels following two blasts in Belgian capital’s airport, killing at least 15 and injuring more than 25, according to Belgian Ministry of Transport.

The explosion heard at Maalbeek Metro Station in central Brussels which is situated near EU buildings.

Other sources claim that there was explosion at Schuman metro station near the building of European Commission.

Belgian authorities have raised the security alert to the highest level following blasts at the Zaventem Airport and Maalbeek Metro station, as RT reports.

Due to the current security situation in Brussels, the city’s transport authority has closed all public transport services.

Images on social media show passengers being evacuated from inside the metro and walking along the train tracks.