Tunisian terrorist Anis Amri was killed in Milan, Italy, while trying to escape European authorities.

Amri was suspected of driving a truck into a Berlin crowd on Monday, killing 12 people while they shopped for Christmas gifts. The radical Islamic terrorist then slipped away and apparently slipped across several borders into Italy.

Amri lingered in the European nation while German police knew he was studying bombs and trying to establish contact with the Islamic State, or ISIS.

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But on Friday morning, around 3 a.m. local time, two Milan police officers killed Amri, 24.

Amri was stopped by police and asked for identification. Amri reportedly shouted “Allahu Akbar” (“God is great” in Arabic). Amri then cursed at police, drew a gun and shot a police officer in the shoulder, according to Fox News.

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Amri, who had been chosen for deportation from Germany, fell through the cracks of the German bureaucracy and lingered in the European nation while German police knew he was studying bombs and trying to establish contact with the Islamic State, or ISIS.

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The Monday massacre has angered critics of German Chancellor Angela Merkel, whose liberal refugee and immigration policies have roiled German politics.

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Merkel has allowed hundreds of thousands of migrants and refugees from the Middle East to come to Germany without so much as a passport, according to Time magazine.

The German people are now at wit’s end, as they watch radical, ISIS-related attacks increase while social chaos, such as attacks on women, continues to rise.

Germany is perhaps the most vulnerable European state given its high number of potentially radicalized refugees and immigrants.

But Germany is not alone in Europe. Radicalized Muslim immigrants have been on a killing spree in the name of ISIS.

On Nov. 13, 2015, radical Islamic terrorists attacked various locations in Paris with explosives and firearms. Some had entered Europe as refugees. On July 14, a Tunisian resident of France hijacked a truck and killed 86 people in Nice, France, during Bastille Day celebrations.

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And there is little sign of the issue of radical Islamism in Europe going away.

On Friday, German police announced more arrests — this time, before a plot could be carried out.

German police said they arrested two men suspected of planning an attack on a shopping mall in Oberhausen, according to Reuters.

Reuters reports the suspects are two brothers aged 28 and 31 who were born in Kosovo. They were arrested in Duisburg, Germany, after police gathered intelligence on them.

There is not link proven as of yet to Monday’s Berlin attack, Reuters reported.