German investigators in the case of Munich mass shooter David Ali Sonboly, who early on stated that the man was linked to Norwegian political mass killer Anders Breivik — Munich police chief Hubertus Andrae was quoted saying there was an “obvious” link, which was widely reported in the media —  have changed their minds on that point.

German authorities are now discounting the reports that Sonboly had been particularly influenced by a study of Breivik’s attack, although the attack on Utoya took place five years earlier to the day.

Sonboly purchased a 9mm pistol on the internet, according to Bavarian investigators. He may have lured victims to the mall by promising them free food at a restaurant there. He fired 57 bullets of 300 he brought in a backpack before being silenced by one police bullet.

Sonboly was a German with Iranian citizenship. He possessed a collection of books about mass shootings in his room, according to police.

He is believed to have planned the mall attack one year in advance.

The young man had a history of psychiatric treatment, having been counselled for a period of two months.