Reports have named Ali David Sonboly as the 18-year-old gunman who killed 9 people in a shooting spree at a McDonalds and shopping centre in Munich last night.
The taxi driver's son had both German and Iranian citizenship and had been born and raised in the city before last night's rampage after which he shot himself dead.
He used an illegal Glock 9mm pistol and had 300 rounds of ammunition when he went on what police have called a "classic shooting rampage".
The weapon had the serial number removed and police are now trying to trace how Sonboly got hold of it.
His body was been found 1km from the scene of the massacre at the Munich Olympia Shopping Centre (OEZ).
A robot was used by cops to search his body for explosives after he apparently shot himself.
Sonboly has been linked to a Facebook account that was set up a day before the shooting with messages luring them to the McDonalds with the offer of gifts.
His father is currently helping police with inquiries while his home is being searched.
Who was he?
Ali David Sonboly was an 18-year-old of who had both German and Iranian citizenship and lived locally.
He had been living in Munich for more than two years. His flat and personal belongings are being examined.
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At a police press conference this morning they said there were indications the gunman had been in psychiatric care and treated for depression.
There is no evidence that he had any links to Islamic State or refugees, they said.
He was born and raised in the German city, and acted alone when he went on a rampage at a shopping centre and fast-food restaurant on Friday.
They also revealed he used a 9mm pistol and had 300 rounds of ammunition when he went on what they called a "classic shooting rampage".
In his backpack was a book called "Amok im Kopf: Warum Schüler töten".
This translates roughly as: "Amok in the head: Why students kill"
It is written by Dr Peter Langman, a psychologist expert who has written about shootings in the United States.
There were also reports police found violent computer games at the teenager's home.
In footage he was seen bursting from a McDonald's restaurant toilet before opening fire on children he reportedly screamed 'Allahu Akbar' before shooting them at close range.
He then pushed through the front doors into the street and carried on shooting, killing at least one pedestrian whose body was later pictured covered on the ground.
Witnesses reportedly heard the man, who appeared in the footage to be carrying a red Pokemon rucksack, screaming: “Ich bin Deutsch, scheiss Ausländer” – “I’m German, f*** foreigners” before opening fire.
The stockily built man appeared to be carrying ammunition around his waist and was seen staggering as he fires.
He was later filmed on the roof of the shopping centre exchanging verbal abuse with someone who filmed the confrontation.
During the slanging match with a man hiding on a balcony, the gunman was heard to say 'because of you I was bullied for 7 years' and made a point of saying he was 'German.'
A translation of the slanging match with a man who was taking cover on a balcony was later being shared on social media.
A neighbour on Dachauer Strasse that was searched by police on Saturday morning described the alleged gunman as "very quiet".
Wishing to only give his first name, Stephan, an owner of a coffee shop, said: "He only ever said 'hi'.
"His whole body language was of somebody who was very shy."
He added: "He never came into the cafe - he was just a neighbour and took out the trash but never talked."
He set up fake Facebook account offering free McDonalds to lure more victims to the restaurant
He posted up a Facebook post the day before the shooting to lure people to the McDonald's in Munich where yesterday's shooting began.
Police have said they are investigating whether a message shared on the popular social media site was relevant to the massacre in Germany which left 10 people dead including the 18-year-old gunman.
A rough translation of the post identified by local media is: "come today to the Maccy's at 16 o'clock at OEZ I 'll buy you something but nothing too expensive"
The OEZ is the name of the shopping mall where the shooting took place.
The account where the invite was posted was disabled while the shooting was ongoing on Friday evening.
It has also been suggested the account, featuring an attractive woman of Middle Eastern appearance, was only created a short time before the 'free McDonald's' posts.
At a press conference in Munich earlier today, a reporter asked: "On Facebook there is a type game whereby at 4 o'clock in the afternoon you should be meeting in McDonald's because something ... I believe this is a fake game where people are asked to congregate at McDonald's because McDonald's might be offering free meals."
What gunman was filmed saying on roof of shopping centre:
Balcony man: 'You f***ing a*****e you...'
Gunman: 'Because of you I was bullied for 7 years...'
Balcony man: 'You w****r you. you're a w****r'
Gunman: '...and now I have to buy a gun to shoot you'
Balcony man: 'A gun! F**k off! Your head should be cut off you a*****e'
An unidentified voice is heard to say: 'F*****g Turks!' before the balcony man says 'f*****g foreigner'
The man filming is then heard to say: "He's got a gun! He has loaded his gun. Get the cops here. He's walking around here the w****r."
The gunman the says "I am German", to which the man filming replies with "You're a w****r is what you are. What the f**k are you doing?"
The gunman is then heard to say "I was born here."
"I grew up here in the Hartz 4 (unemployment benefits in Germany) area."
He pleads with the onlooker "please shut your mouth."
What happened to him?
After what appeared to be a two hour information blackout, police revealed that the gunman's body had been found 1km away from the shopping centre.
How he managed to escape the scene given that 100 police were in and around the shopping centre has not been revealed.
A robot was reportedly used by police to check his body for explosives before his ID could be ascertained.
It is believed he shot himself, but this has yet to be confirmed.
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Why did he do it?
Information, again, is yet to fully emerge about the reasons behind the teenager's gun attack, but pro-ISIS Twitter accounts have been widely celebrating the attack with some suggestions that the group has taken credit for it.
Germany has been on high alert since Afghan refugee Muhammad Riyad went on an axe rampage on a train in Bavaria before being shot dead by police.
Racial tensions in the country have increased since the arrival of an estimated 1.2m refugees over the past 12 months with far right parties gaining in support.