Three days before he detonated a bomb that killed 22 people at a Manchester concert venue, police believe Abedi withdrew £250 from an ATM before he went shopping in the centre around 8pm, the broadcaster said. Two poor-quality images from closed circuit television show a young man, who Sky said the police believed to be Abedi, dressed in black with a black rucksack with a vivid blue lining. Price tags on the rucksack indicate it had just been purchased, they said.Photographs from the investigation published by the New York Times earlier on Wednesday show remnants of blue material it said came from a Karrimor-branded backpack carried by Abedi. Want the best of The Telegraph direct to your email and WhatsApp? Sign up to our free twice-daily Front Page newsletter and new audio briefings. Abedi visits Arndale shopping centre on May 19 Credit:Sky News The Manchester Arena bomber Credit:Facebook Remnants of what is believed to be the terrorist’s backpack The images, which also show a trigger switch with a tiny circuit board soldered into the end, were leaked to the paper after being shared with US intelligence, prompting a furious response among ministers. Manchester bomber Salman Abediwas photographed by security cameras in the city’s Arndale shopping centre on Friday evening, carrying a rucksack that appeared to be recently purchased, Sky News reported.