Vienna attacks that killed 3 involved at least one 'Islamist terrorist'

At least 3 civilians were killed and more than a dozen injured during a terrorist attack from several locations in Vienna, Austria, on Monday.

Vienna's police chief updated the number of victims from 2 to 3 in a Tuesday morning press conference. The victims included 2 men and 1 woman, Vienna police tweeted. 

At least 15 others were severely injured, including a Vienna police officer, police said. 

Police said the attack was carried out by at least one suspect who was shot and killed by Austrian officers. 

Austrian Interior Minister Karl Nehammersaid in the press conference that the attacker who was killed was an ISIS sympathizer, the Guardian reported. Vienna police confirmed the attacker is believed to have had an "islamistic motive." He was wearing a fake explosive vest, police said. 

President Trump late Monday tweeted, "Our prayers are with the people of Vienna after yet another vile act of terrorism in Europe. These evil attacks against innocent people must stop. The U.S. stands with Austria, France, and all of Europe in the fight against terrorists, including radical Islamic terrorists."

The Austrian Police tweeted earlier that multiple suspects armed with rifles started shooting at 8 p.m. local time in six different locations. It was unclear if police still believe there were multiple attackers.  

Counterterrorism sources told Fox News that having shooters in six different locations indicates a coordinated, planned effort.

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Karl Nehammer, Austrian minister of the interior, reported "several deaths," but another official later clarified that was not accurate.

"It is the hardest day for Austria in many years. We are dealing with a terror attack the severity of which, thank God, we have not experienced in Austria in many years,'' Nehammer said at the news conference, according to Reuters.

He also urged the public to stay home and the city of Vienna tweeted that "there will be no compulsory schooling in Vienna tomorrow."

The army is guarding key locations to free up police to search for the gunmen, Nehammer told public broadcaster ORF.

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"Our police will take decisive action against the perpetrators of this hideous terrorist attack," Sebastian Kurz, the chancellor of Austria, tweeted. 

"I am glad that our police officers have already been able to eliminate a perpetrator. We will never allow ourselves to be intimidated by terrorism and will fight these attacks resolutely by all means."

Oskar Deutsch, a leader of the Jewish community in Vienna, said that the shooting was near a synagogue. 

"It cannot be said at the moment whether the city temple was one of the goals," Deutsch tweeted. "What is certain, however, is that both the synagogue in Seitenstettengasse and the office building at the same address were no longer in operation and closed at the time of the first shots."

The motive of the attack is unclear, but Kurz said an antisemitic attack cannot be ruled out due to the proximity to the synagogue.

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Rabbi Schlomo Hofmeister said he saw the attackers shooting at people in cafes and bars on the street. 

“They were shooting at least 100 rounds just outside our building,” Hofmeister told the Associated Press. “As of midnight, all bars and restaurants will be closed in Austria for the next month, and a lot of people probably wanted to use that evening to be able to go out.”

European leaders condemned the terrorist attacks Monday. 

French President Emmanuel Macron tweeted that France shares "the shock and sadness of the Austrians after an attack in Vienna."

Italian Prime Minister Giuseppe Conte tweeted "there must be no place for hatred and violence in our common European house."

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The White House condemned the attack on Monday night. 

Democratic presidential candidate Joe Biden also tweeted his condolences Monday. 

The Associated Press contributed to this report.