Vienna Shooting Deemed Terror Attack; ISIS Claims Responsibility

A terrorist attack in Austria left four dead and 22 wounded. The gunman, an Islamic State sympathizer, was killed by police. The Islamic State claimed responsibility, but it's unclear if they were involved. Austrian Chancellor Sebastian Kurz urged unity, warning against divisions. The attack follows recent terror incidents in France, prompting increased security across Europe. Leaders call for a collective plan to combat terrorism and prevent radicalization. Austria announced a mourning period and advised Vienna residents to stay home until safety is assured.

What was the outcome of the Islamist terrorist attack mentioned in the text?

Who was identified as the gunman in the attack?

What did the Austrian Chancellor warn against in the wake of the attack?

What measures are being taken across Europe in response to the violence?

What is the significance of the three-day period of official mourning announced by the Austrian Government?