According to Milan Police Chief Antonio De Iesu, the officers noticed Amri alone outside of a closed suburban Milan train station at approximately 3 a.m. They became suspicious and approached Amri, who said he had no ID papers or phone.

Amri was reportedly armed with a small pocket knife and a fully loaded 22-caliber pistol, which he used against the officers. He shot Movio in the right shoulder before being fatally shot in the chest by Scata.

Italian Interior Minister Marco Minniti issued a statement, praising Movio for his efforts. He said he thanked Movio and wished him a merry Christmas.

“I told him that I hope he gets better soon,” Minniti said. “The boy is very motivated. He’s an extraordinary person. I thanked him for the professionalism that he demonstrated, for the professionalism that he and his colleague had demonstrated.”

Movio, 35, had a successful surgery on his right shoulder, The Associated Press reported. The surgeon said he is in good condition.

Germany Federal Prosecutor Peter Frank said they are now investigating as to whether Amri had any accomplices, and how he escaped from the city.

“We are in close contact with the Italian authorities,” Frank said during a press conference, according to BBC translation. “We are interested to learn whether the weapon Amri carried in Milan was the weapon used in the attack in Berlin. We are investigating with high intensity.”

A video of Amri pledging allegiance to ISIS leader Abu Bakr al-Baghdadi prior to the attack has surfaced on Amaq news agency, Reuters reported.

In the video, Amri said:

My message to crusaders bombing Muslims everyday… Their blood will not go in vain. We are a nation behind them and will take revenge for them.

I call on my Muslim brothers everywhere… Those in Europe, kill the crusader pigs, each person to their own ability.

Rita Katz, the director of SITE Intelligence Group, said the video indicated that Amri “had ties with #ISIS, but that his attack itself was ISIS-inspired, not ISIS-coordinated.”

The attack in Berlin killed 12 people.