Greater Manchester Police have released several CCTV images of the bomber who targeted a concert on Monday (local time).
Twenty two people were killed and many others injured, a number of them young children, when Salman Abedi detonated a bomb at an Ariana Grande concert.
Abedi also died in the blast and police have now released CCTV images of him earlier in the night to try and trace his movements.
In the pictures he can be seen wear a black puffer jacket, a grey cap, and carrying a backpack.
The background of both images was blurred by police before the images were made public.
Anyone with information is urged to contact Greater Manchester Police.
Eleven people remain in custody after being arrested in connection to the attack.