The train line between Wurzburg-Heidingsfeld and Ochsenfurt is closed as investigators scour the area for clues.
According to sources, he had an axe and a knife on him - both of which he is alleged to have been using in the brutal assault.
Nice terror attack 'hate memorial' sees furious people spit and throw rubbish at spot mass murderer killed Helicopters were seen swirling over head as the area was flooded with emergency services who raced to treat those injured.
There has not yet been any word on whether or not the attack is linked to extremism of any kind, but Europe has been on major alert since a terrorist killed more than 80 people with a massive lorry in Nice last week.
The horror began at around 9mpm local time when the teenager stormed a train that was travelling close to Wurzburg in southern Germany.He then shouted "Allahu Akbar" - which means God is greatest - before launching into the terrifying attack on innocent passengers and then attempted to flee.Police have confirmed that at least four people, three of who feared to be fighting for their lives, have been injured in the horrifying attack - which began this evening. Eye-witnesses say the man went on the rampage with an axe before attempting to flee from the scene.The incident is understood to have taken place at the station in Heidingsfeld, a part of the city of Wurzburg in southern Germany.Early reports claim he has left at least three people fighting for their lives, and a fourth with minor injuries.
At least 14 other passengers were being treated for shock.