Manchester attack: CCTV image of suicide bomber Salman Abedi before blast released

The attack left at least 22 people killed.

In the CCTV image released, the attacker is seen wearing a baseball hat and a dark jacket during the concert by American pop singer Ariana Grande in the arena.

Greater Manchester Police said the threat level in the UK has been reduced from critical to severe.

Chief Constable Ian Hopkins, said:“The change in the national threat level from critical to severe does not alter our response to Monday’s horrific attack, which claimed so many innocent lives."

“We have made significant progress in this fast moving and complex investigation, working with the national counter terrorism policing network and UK intelligence partners and securing the arrests of 11 people who remain in custody" Hopkins said.

“The level of resources we have available to us remains the same as we continue to take positive action so you will notice additional officers, including armed officers, on patrol especially at a number of events this weekend to ensure the security and safety of everyone but it’s important that people remain alert and vigilant," he said.

Image: Greater Manchester Police Twitter page