TWITTER IG The scene outside Grafing Station

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German police say witnesses said the knife-wielding man shouted "Allahu Akbar" ("God is great") during his rampage at a railway station in the Bavarian town of Grafing, Munich. A 50-year-old man was initially in a critical condition, but died later in hospital following the the attack at 5am (4am GMT), according to reports. Police said three victims have suffered life-threatening injuries. It is believed all of the victims were men who were aged 43, 55 and 58-years-old. Two of the men attacked were on bicycles, while one of them was the newspaper vendor.

TWITTER The attack took place in Grafing

One man has died following the bloody rampage

The knifeman was caught a few feet away from the station entrance and is now in custody. Prosecutors said the alleged attacker is not "very co-operative". He has since been identified as Paul H.and comes from the town of Giessen in Hessen. He was reportedly a drug addict who has been treated in the past for psychiatric disorders, according to reports. Whether he had links to the thriving Islamist scene in Germany is yet to be established by investigators. However police are investigating if he branded his victims 'Ihr Ungläubigen' - you non-believers - before he stabbed them. The station has been sealed off. Eyewitnesses said the man stabbed indiscriminately and also attacked a newspaper delivery stand. Rescue helicopters and ambulances scrambled to the scene and passengers were forced to enter through a side entrance. Authorities working to identify the knifeman, who used a 10cm blade, believe the his motive may have been "political". A Bavarian police spokesman said: "The perpetrator made remarks during the attack which point to there being a political motive." Police will be investigating possible links to terrorism. Conflicting media reports have identified the young man as both an asylum seeker and a radicalised German-born who converted to Islam.

REUTERS A man remains in custody

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Bavarian Radio broadcast said that the knifeman was a "young German not previously known to police." The mayoress of Grafing Angelika Obermayr later confirmed that the attacker was a German man aged 27. She said: "The idea that people go on a beautiful morning go into the S-Bahn station or sell newspapers there and then become victims of a madman is just terrible."

GETTY Forensic experts of the police stand next to a commuter train

At least one platform at Grafing Bahnhof station will remain closed until lunchtime and the incident has caused delays across the city's railway network. Michaela Gross, a police spokeswoman, said: “There is no longer any threat to the population.” Germany is currently playing a supporting role in the fight against the barbaric Islamic State (ISIS). It comes after weeks of rising tensions between Germans and immigrants at a time when national intelligence agencies have been warning of potential Islamist linked terror plots.

AFP The suspect is believed to be a 27-year-old German national