MANCHESTER suicide bomber Salman Abedi used YouTube videos to help build the devastating explosive that killed 22 people.

The warped jihadi viewed clips on the internet about how to make deadly improvised explosive devices, The Times reports.

6 Salman Abedi set off a deadly homemade nail bomb at the exit of the Ariana Grande concert at Manchester Arena last month Credit: BBC

6 People pay their respects and lay flowers at a memorial for the victims of the Manchester bombing at St Ann's Square, near Manchester Arena Credit: EPA

6 Concert-goers leave Manchester Arena after the deadly terror attack Credit: Getty Images

Maniac Abedi also reportedly downloaded material from other websites about the chemical compound used in the bomb, which he detonated last month at the Manchester Arena.

Security officials had originally believed the device had been put together by an experienced bomb maker because of how complex it was.

But The Times has revealed deadly tutorials on making bombs were available on Facebook and YouTube two days after the Manchester blast.

6 Cops help concert-goers after deadly arena attack which left scores of youngsters injured Credit: PA:Press Association

6 Tragic aftermath of the Manchester terror attack this week which killed 22 and left scores of young people injured Credit: London News Pictures

One showed step-by-step instructions on how to make an explosive using acetone peroxide, which was used by Abedi in the Manchester attack.

Sources told the paper that the depraved monster downloaded material from videos containing information about how to construct various devices.

He reportedly trawled the dark web as well as YouTube to find the deadly clips so he could carry out his brutal massacre on children and adults at an Ariana Grande concert.

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A police source said: “There were initially concerns that a bombmaker was on the loose but he seems to have made it himself.

"He was a very disturbed young man. He went online and carried out a lot of research.”

The bomb used to massacre 22 people and injure hundreds more also contained TATP - used in the 7/7 terror attack - and shrapnel.

Abedi carried the device in a £37 Karrimor rucksack bought from Sports Direct in central Manchester.

6 Tributes laid for Manchester Arena terror attack victims after deadly blast Credit: Reuters

Nuts, bolts and screws costing £18 from the two DIY stores were packed into the bomb as shrapnel.

And to power its detonation, the 22-year-old maniac may have got a £11 battery from Toolstation.

A YouTube spokesman said: “We do not allow bomb-making videos and quickly remove flagged videos that break our rules. We employ thousands of people to counter abuse of our platform and are working with government, law enforcement and civil society groups to tackle the problem of violent extremism online.”