Berlin Refujihadist Pledges Allegiance to ISIS in Newly Released Video

In a just released video by the Islamic State's Amaq news agency, Anis Amri, the Berlin Christmas market attacker, is shown pledging his allegiance to Islamic State leader Abu Bakr al-Baghdadi and calls for Islamic State supporters to take revenge of "crusaders" bombing Muslims, a video posted on Amaq news agency showed.

"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," he said.

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

Speaking to camera, Amri says: “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."

German Chancellor Angela Merkel says her government will investigate whether and to what extent political and legal changes need to be made in the wake of the suspected Islamist attack in Berlin that killed 12 people.