Police have revealed the final movements of Manchester suicide bomber Salman Abedi and released CCTV images of him taken on the night of the attack.
Before the attack, the terrorist who killed 22 people at Manchester Arena visited his city centre flat, where police believe he may have assembled the bomb.
Greater Manchester Police have now released CCTV images of Abedi from the night of the attack.
He was wearing a baseball cap and was carrying a rucksack on his back.
Police issued the images alongside a joint statement from chief constable Ian Hopkins and deputy assistant commissioner Neil Basu, senior national coordinator of UK Counter Terrorism Policing.
They said: ‘We are gathering a detailed picture of Abedi as the investigation develops and now need people to tell us if they have any information about his movements from May 18 when he returned to the UK through to Monday night.
‘The investigation is making good progress and we know one of the last places Abedi went was the city centre flat and from there he left to make his way to the Manchester Arena.
‘The flat is highly relevant as a location which we believe may be the final assembly place for the device.’
The statement added that 17 warrants have been carried out, 14 locations are still being searched and 13 people have been arrested.
A thousand people are involved in the investigation into the terrorist attack at an Ariana Grande concert.