Sarajevo stands with Vienna: City Hall illuminated in colours of Austrian flag

On Monday, an armed attacker, or possibly more of them, opened fire in the city centre, killing four people and injuring at least 20.

"With this symbolic act, we want to send a strong message of unity. Our thoughts in these difficult times are with the family members of innocent victims who lost their loved ones, but also with the citizens of Vienna and Austria" said Sarajevo Mayor Abdullah Skaka, wishing for a swift recovery of those who were injured.

Skaka said that only “our determination to fight terrorism together” can protect and defend freedom, democracy, and cultural and civilizational values.