YouTube has confirmed it has deleted an account linked to the Plymouth mass killer where he posted a series of sinister rants railing against perceived injustices.
The Google-owned platform said on Friday that Jake Davison's profile - titled 'Professor Waffle' - had been removed for violating its offline behaviour policy.
Videos had emerged in the aftermath of Thursday's tragedy showing the suspect, 22, talking about being a "fat", "ugly" and a "virgin" - and claiming he had been "beaten down by f****** life".
Davison, a licensed gun holder, last posted a clip on July 28 in which he referred to himself as "the Terminator" - just two weeks before the massacre.
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And lamenting his life, he said: "You wake up and you stare at the wall and you think 'nothing's changed'. I'm still in the same position, same period in life. Still a f****** this, that, virgin, f***** fat, ugly."
Before the horror in Keyham, Davison's videos had only been viewed by a few hundred people each time and received only a handful of comments.
But, in the aftermath of the incident, his account began to receive more attention - prompting YouTube to take action and remove the content.
A spokesperson said: "Our hearts go out to those affected by this terrible incident. We have strict policies to ensure our platform is not used to incite violence.
"In addition, we also have long standing policies that prohibit those responsible for attacks like these from having a YouTube channel and have since terminated their channel from our platform."
Facebook has also confirmed that accounts belonging Davison have been removed.
A spokesperson for the social network said his presence had been taken down from their platforms under its dangerous individuals and organisations policy, which does not allow mass murderers to be on Facebook or Instagram.
Davison's bizarre rants centred on a few topics, such as his failed life and his inability to get a girlfriend - which he linked to the 'incel' and 'blackpill' ideas.
Both are linked misogynist philosophies attributed to radical fringe groups, usually made up of young men, based around looks and the reasons why they can't attract women.
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Davison said: "I'm so beaten and defeated by f****** life. That drive that I once had had, that's gone now. It's literally gone - I don't have the power anymore."
And, speaking about success, he continued: "Imagine failing at everything in life and having absolutely no support. Yeah, maybe that business owner might go bankrupt twice.
"Might have had to work a hundred hours a week over time and all this s*** and barely just made it out. But guess what? He had a wife and the kids to support him.
"Does an incel, a virgin, get that? No. And then, what about the athlete? Well yeah, he might have had to f****** grind and sweat and all this s***.
"But what did he have? You know, he had that supportive family. He had that girlfriend who was cheering him behind the background."
Police have released details of Davison's murderous rampage, which started at around 6pm - and ended with six people dead, including the gunman.
In a press conference on Friday, Devon and Cornwall Police chief constable Shaun Sawyer said first killed a woman who was known to him at an address which has not been disclosed.
He then went on a murderous rampage, killing four more people and injuring two others with a gun described by witnesses as a "pump action shotgun".
The names of the victims have not yet been released, although police have confirmed some details and said the first person killed, a woman, 51, was known to the killer.
Mr Sawyer said: "Mr Davison then left that address, entered Biddick Drive where he immediately shot then killed a very young girl, he also shot and killed the male relative of that girl.
"Further along Biddick Drive he aimed and shot at two local residents - a man and a woman - who received significant but we understand, at present, not life-threatening injuries."
"From there, Mr Davison entered adjacent parkland where he immediately shot a man who died at the scene. Thereafter he moved to Henderson Place where he shot a woman."
Mr Sawyer said that the gunman - who eyewitnesses said was armed with a "pump action shotgun" - then turned the weapon on himself before officers could arrive.
A three-year-old girl, a related 43-year-old man, 66-year-old woman and a 59-year-old man have been identified by police as the victims.
Two other people - a 33-year-old man and 53-year-old woman - survived with "significant" injuries and continue to receive treatment in hospital following Britain's first mass shooting in 11 years.
