Berlin truck terrorist Anis Amri has been shot dead after a gunfight with police in Milan in the early hours of this morning.

The Tunisian pulled a gun from his backpack, screamed 'Allahu Akbar' and opened fire on two officers – hitting one in the shoulder – before being shot dead after getting off a train from France.

Hours later, a suicide video emerged online where Amri pledges allegiance to ISIS and vows to to punish 'pig-eaters'.

Amri had been on the run for four days after ploughing a lorry into crowds of revellers enjoying a Christmas market in Berlin on Monday night, killing 12 and maiming dozens of others. 

The 24-year-old ISIS fanatic was stopped by a routine police patrol in the suburb of Sesto San Giovanni in the northern Italian city of Milan at about 3am local time.

Two officers asked him for ID documents, at which point Amri 'immediately' pulled a gun from his backpack and shouted 'police b******s' as he shot one in the shoulder.

A firefight ensued with Amri cowering behind a car as he tried to flee, but the suspect was shot and killed by the second officer – a trainee who had only been in the job a few months.

ISIS news outlet Amaq today confirmed Amri's death - and that he carried out the market massacre in Germany.

Security chiefs believe Amri, who used at least six different aliases with three nationalities, was trying to flee to southern Italy where he had entered Europe illegally in 2011.