Authorities have discovered German-Iranian Ali Sonboly,18, had an obsession with mass shootings and researched them before he murdered nine people in Munich. The police said:

“With regard to the suspect we have to examine everything, but we don’t know yet what triggered the crime,” said Peter Beck, a police spokesman.

According to investigators, materials were found in Mr Sonboly’s room indicating a fascination with mass shooting incidents. “There was material found in the apartment of the suspect that showed a particular interest in shooting sprees”, said Thomas de Maiziere, Germany’s interior minister.

They also found links between Sonboly “and the fifth anniversary of the shootings perpetrated by Anders Behring Breivik in Norway on Friday.” He used Breivik’s picture as his avatar on Whatsapp.

They did not find any connections between Sonboly and Islamic terrorist groups. Those groups did cheer the attack on social media.

Sonboly did receive psychiatric treatment, but authorities have not given out specifics on his mental health.

Sonboly hacked into a Facebook account, posed as girl named ‘Selina Akim, and lured his victims to a McDonalds for free food:

A post from a young woman’s account urging people to come to the centre said: “I’ll give you something if you want, but not too expensive.”

Police discovered Sonboly’s body about two hours after the attack. Evidence shows he took his own life. Police found “a 9mm Glock pistol and 300 bullets in his rucksack,” but do not know how he acquired the weapons since he did not have a permit “and the serial number had been obliterated.”

One classmate said others bullied Sonboly, who once threatened to kill everyone:

She recalled how during a row a few months ago he had vowed to kill his classmates.

“In an argument, he said he wanted to carry out a massacre. He said: ‘I will kill you all’.”

Tovero Evo, 32, lived in the same flats as Sonboly’s family. He said the teenager “was always friendly.” Another neighbor said he “seemed a decent, normal guy.”

[Featured image via Twitter]