29 May, 2017
Ms Rudd told BBC1's Andrew Marr Show: "It's an ongoing operation, there are 11 people in custody, the operation is still at full tilt, in a way".
The teenager was arrested during an armed swoop on an address in the Gorton area of Manchester.
The background of both images was blurred by police before the images were made public.
British officials confirmed that Abedi recently returned from Libya on May 18, and that police were seeking more information about his movements upon his return.
They issued a photograph of Abedi taken on Monday night before he blew himself up killing 22 people and said they believed he had assembled his bomb in an apartment in the city centre.
In a statement, police said: "The investigation is making good progress and we know one of the last places Abedi went was a city center flat and from there he left to make his way to the Manchester Arena".
Police have altered the background of this CCTV image of Salman Abedi, so as to not identify those who were near him when he detonated his bomb.
Prime Minister Theresa May said developments in the investigation prompted intelligence experts to lower the threat level in the country from "critical" to "severe" on Saturday, claiming that a critical part of the network had been dismantled.
The Guardian reports armed officers have raided a property near Quantock Close and Selworth Road in Moss Side shortly before 2 pm on Sunday in connection to the Manchester Arena terror attack.
Prime minister Theresa May said developments in the investigation into the bombing meant intelligence experts had made a decision to lower the threat level from its highest rating "critical", meaning an attack could be imminent, to "severe".
Police have released surveillance-camera images of Abedi on the night of the attack and appealed for more information about his final days. The straps of a backpack are visible on his shoulders.
"I believe we can get them to be more successful in working with us to find a way of getting some of that information", she said.
On Friday, UK Security Minister Ben Wallace told CNN in Manchester that there are "over 400 investigations now ongoing by the security services and police into terrorist planning or people thinking about terrorist planning".
Peter Hook, a member of seminal Manchester band New Order, was among the runners and said the tragedy had brought people together.
Abdedi was known to British security officials before the bombing, the government said, but Rudd declined to comment on exactly what had been known about him.
"I've always had a pride in this city, ever since I was born", he said.
Rudd said Sunday that intelligence agencies were monitoring 3,000 suspected extremists and had a wider pool of 20,000 people of interest.
"But I would not rush to conclusions, as you seem to be, that they have somehow missed something".
