German police have confirmed there was no indication that a shooting that occurred in the Olympia-Einkaufszentrum shopping centre in Munich on Friday was linked to Islamic State terror following raids of the gunman's bedroom.
At a press conference on Saturday Robert Heimberger, President of the Bavarian State Criminal Police Office said the 18-year-old German-Iranian citizen, who has been named as Ali David Sonboly and was believed to have worked alone, had no prior criminal record and was not known to authorities before the incident where at least ten were killed, including the gunman, and 27 injured.
Documents were found in Sonboly's bedroom that suggest he had researched shooting rampages prior to the incident, including a book titled' Rampage in My Mind -- Why Students Kill', according to the CNN.
The "classic style shooting rampage" took place in the district of Moosach around 6pm local time on Friday and erupted at a McDonald's restaurant, police told Germany's dpa news agency, with chilling footage of the incident captured by bystanders.
The shooter was later found dead carrying more than 300 bullets in his backpack. He is suspected to have shot himself after carrying out the horror attack.
The Department of Foreign Affairs and Trade (DFAT) is working urgently to determine whether any Australians have been caught up in the incident.
Further footage showed a man on a roof near where the attack took place, with German police telling reporters they believed the man was the same one involved in the shooting.
.@Kileysky says man in video on rooftop is same man spotted outside #Munich McDonalds https://t.co/4V6JRpuxD1
— Sky News (@SkyNews) July 22, 2016
Authorities believe the attacker was an 18-year-old German-Iranian who had lived in Munich "for a long time". They said the motive for the attack was currently "unclear".
An "all clear" has now been issued for the city in the wake of the horrific attack.
DFAT told The Huffington Post Australia that its staff in Germany were trying to determine if Australians were among the victims.
"The Australian Embassy in Berlin and the Australian Consulate-General in Frankfurt are making urgent enquiries to determine whether any Australians have been affected by the incident in Munich," DFAT said.
The Australian government is urging citizens to exercise a high degree of caution in Munich.
Munich police said the alleged attacker acted alone and killed himself when confronted by police.
A state of emergency has been declared in the city, public transport has been suspended, and Munich is in lockdown as authorities tell residents to stay indoors.
More details on the attack can be read here.