This may, of course, not be a jihad attack. The German authorities, however, are so unforthcoming with details about such attacks, that there is no way to tell with certainty what it is.
The Islamic State issued this call in September 2014:
So O muwahhid, do not let this battle pass you by wherever you may be. You must strike the soldiers, patrons, and troops of the tawaghit. Strike their police, security, and intelligence members, as well as their treacherous agents. Destroy their beds. Embitter their lives for them and busy them with themselves. If you can kill a disbelieving American or European — especially the spiteful and filthy French — or an Australian, or a Canadian, or any other disbeliever from the disbelievers waging war, including the citizens of the countries that entered into a coalition against the Islamic State, then rely upon Allah, and kill him in any manner or way however it may be….If you are not able to find an IED or a bullet, then single out the disbelieving American, Frenchman, or any of their allies. Smash his head with a rock, or slaughter him with a knife, or run him over with your car, or throw him down from a high place, or choke him, or poison him….
“BLOODSHED IN EUROPE Knifeman shot dead in Germany after stabbing two people and axe-wielding maniac gunned down by cops in Netherlands,” by Aletha Adu, The Sun, May 30, 2018:
A KNIFEMAN who stabbed two people was shot dead in Germany hours after an axe-wielding maniac was gunned by cops in the Netherlands.
A German police woman reportedly gunned the man after she and her fellow officer were stabbed near Flensburg central station, according to reports.
German newspaper Bild reported the knifeman first launched a street attack almost 12 miles away from the station.
The fight dramatically escalated as the pair struggled after boarding the train, and police were called to the scene.
But as police officers tried to calm the struggle, the knifeman left the two officers severely injured…