But as campaigning resumed in Britain for a snap June 8 election following a halt called after Monday's attack, the issue of security, which had not been widely discussed before the attack, was poised to feature highly as polls showed May's poll lead falling sharply. A woman arrested in the Blackley area yesterday has been released without charge.
In other developments on Wednesday detectives made a further three arrests in connection with the investigation, taking the number of people in custody to four.
The prime minister will also point to the "callous and cowardly" Manchester bombing as an example of why the global community, including North Atlantic Treaty Organisation, must do more in the fight against terrorism, the official said.
"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", Greater Manchester Police Chief Constable Ian Hopkins and Neil Basu, Senior National Coordinator UK Counter Terrorism Policing said in a joint statement on Saturday.
Britain cuts terrorism threat level from 'critical'
As a result, soldiers who have been assisting police, would be withdrawn from Britain's streets from midnight on Monday. A total of 11 people suspected of having links to the terror attack are now in police custody.
UK Prime Minister Theresa May is reportedly expected to raise concerns with Trump over the leaks. Police confirmed that more than 20 people were killed in an explosion following a Ariana Grande concert at the venue late Monday evening.
It was the latest of a series of leaks to USA journalists that appeared to come from inside the U.S. intelligence community, passing on data that had been shared between the two countries as part of a long-standing security cooperation.
The arrests bring to 11 the number of suspects held in Britain over Monday's blast at a concert by U.S. pop idol Ariana Grande, in which 22 people died and 116 were injured and for which the Islamic State group has claimed responsibility.
Police said relatives of all those killed had been informed and specialist officers were supporting them.