Suicide bomber Salman Abadi made his deadly device with the support of the ISIS warlordsa-
Night apartments in the city center.
The police are worried that he made enough explosives to make two bombs.
As MI5 warned, his 3,000 jihadist companions are currently involved in 500 active plots in the UK.
The 22 victims killed by Abedi were identified after the attack yesterday and 116 were injured.
According to a survey by The Times, Abedi may have planned an attack for a year and received training from ISIS experts in Libya or Syria.
It is said that he set up a bank account 12 months ago to fund his DIY trip when he made a deadly bomb --
Production kit purchased from B & Q and Screwfix.
The newspaper said he was believed to have been to supermarkets at least twice before leaving Libya in April.
Abedi first built detonators, a small power distribution panel, in a workshop in his home in farofield, south Manchester.
He then mixed and prepared the equipment in the kitchen and bathroom of the rental apartment a few hours before the concert massacre on Monday night.
He combined hydrogen peroxide with another chemical to produce a white powder known as the mother of Satan, which acts as an explosive. A 12-
The detonator battery is then connected to power the detonators.
The device was then hidden in a blue Karrimor backpack filled with nuts, screws and bolts and in the arena two miles away --a 25-minute walk.
A smart tablet owned and rented by a couple was attacked by SAS and armed police on Wednesday.
Yesterday, the main entrance to the block was still under armed guards.
A bomb truck is still there, and the underground parking lot of the building has been blocked.
The £ 100,000 apartment on Granby Street is just a few minutes' walk from Manchester's main Piccadilly station and close to the city's gay village.
The description on the apartment list states that it is "located in the city center" and has a complete
There is a kitchen/lounge with a shower, a double bedroom and a bathroom.
It added that this is an "ideal location" for most city landmarks including "Phones4U Arena"
The former name of the Manchester Arena. The third-
Floor apartments are available through the rental agency ARC Properties, and the land registration document lists the owner Ruth Bain.
She served as a director of the company with her husband Andrew and son Christopher.
There was no indication that they were involved in the attack, but the police were thought to have asked them about the rent to determine the account of the source of the payment.
Although there is no CCTV on the door, police have taken video footage from nearby buildings and are checking it for clues.
There are also viewing shots on the route from the apartment to the arena.
Abedi is believed to be in the apartment at seven o'clock P. M. on Monday, just three and a half hours before his bloody attack on Ariana Grande.
Residents of the neighborhood told The Sun that they had spoken to the police about some suspicious packages that had been sent to the postal room.
Adam Price, 38, who lives opposite the bomb-making ground, said: "It's incredible to think that someone is hiding inside and planning such atrocities.
"I know it's a short term rental --
The term makes people come and go over the years.
"It's a party apartment because it's in the city center.
Used by people visiting the city to enjoy a good time.
It can be lively sometimes, but it's just fun for people.
"But recently there was no noise in the apartment and no trouble.
When I was out walking my dog on Wednesday, a friend called me and said, "your building is on the news ". It’s surreal.
"I reported to the police that recently I saw a lot of big parcels in the postal room being delivered --
This is just a very unusual thing.
Adam also said he recently saw an "Asian" He didn't know leave the apartment.
He added: "I have lived in this building for 15 years and have a good understanding of who everyone is.
"But last week, when I came to the main entrance after walking my dog, there was an Asian man who I didn't know, who was wearing Islamic religious costumes, hats and robes.
"He kicked my dog and yelled at me to let him go. I was appalled.
"These bombs are the same as those used in recent attacks in Brussels and Paris.
It is reported that 22-year-old suicide bomber Abedi and notorious recruiter Rafael Horst grew up in the same manor.
The information found in the IS document cache by Sky News shows that the two people already know the link and the security services department says they have a "important" connection.
They hung out and prayed together in the same mosque in Didsbury.
It is believed that at least 16 people from a wider area signed up for jihad abroad.
Hostey is believed to have been killed by drone strikes in Syria last year, only 24 years old.
Abedi was kicked out of another mosque after accusing an imam of "speaking" in a sermon criticizing IS.
Abdullah musine Norris, president of the 70-year-old mosque, said: "I am very unhappy to know that he is here, praying here, seeing him reading the Quran, etc --
You heard him explode the next minute and 22 people were killed.
"It's hard to believe someone can do this.
"Negotiations are also in Britain
The son of a Libyan-born parent who, after trying to hide in the library for an overnight reading of religious books, was also asked to leave the Salaam Community Center in Mosside.