“An Islamist background to the crime cannot be ruled out,” the prosecutors in Munich said in a statement published late Tuesday of the incident, after
investigators initially said there were no indications of such a motive.

“Indications pointing in this direction include the contents of the defendant’s Facebook account and propaganda videos of the terrorist organisation Islamic State (IS) found on him,” they said.

The case has been handed to the Bavarian police’s anti-terrorism unit which is continuing to evaluate documents and data carriers seized from the suspect, they said.

The 27-year-old suspect is believed to have acted alone in the assault on a high-speed train between the Bavarian cities of Regensburg and Nuremberg on November 6th.

READ ALSO: Several wounded on German train attack

He was arrested and taken into psychiatric care, with an initial assessment suggesting he was suffering from paranoid schizophrenia and was most likely not criminally responsible for his actions.

Prosecutors accuse him of attempted murder, attempted manslaughter and grievous bodily harm.

Germany remains on high alert for terror attacks from Islamists and far-right extremists after a series of deadly incidents in recent years.

Last May, a Syrian jihadist was given a life sentence for stabbing a German man to death and severely wounding his partner in a homophobic attack in the eastern city of Dresden.