THE Munich gunman shot children in a McDonald's restaurant while shouting 'Allahu Akbar', according to a horrifying eyewitness account.

The shooter loaded his weapon in the bathroom before walking out and massacring those inside, it is claimed.

2 Footage has emerged of one of the shooters firing indiscriminately at a fleeing crowd outside McDonald's Credit: Twitter

The witness, named only as Lauretta, said she heard an alarm before "boom, boom, boom" -- the sound of gunshots.

"The children were sitting to eat ... they can't run", she told CNN news channel.

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German authorities have so far avoided linking the gun attack to a Jihadist plot.

There is also the suspicion the atrocity could have been carried out by far-right fanatics, as the horror unfolded on the fifth anniversary of the Anders Breivik massacre in Norway that killed 77 people.

2 Armed police in balaclava's are swarming the city on the hunt for the suspects Credit: AP:Associated Press

However, the witness claims she heard the gunman scream 'Allahu Akbar', meaning 'God is Great' -- a phrase often used by Jihadists.

Lauretta said she was sure the attacker yelled the phrase because she is a practising Muslim.

"I hear this and I only cry", she said.

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