28 May, 2017
Armed police officers and soldiers were deployed at soccer matches, concerts and other big events.
Police have arrested two more people and are searching a new site in Manchester suspected of links to the bombing that killed 22 people at a pop concert. The straps of a knapsack are visible on his shoulders.
"Our priorities are to understand the run up to this awful event and understand if more people were involved in plotting this attack", the statement read.
British Prime Minister Theresa May called the attack a "sickening act targeting children and young people".
"She expressed the view that the intelligence sharing relationship we have with the U.S.is hugely important and valuable, but that the information that we share should be kept secure", a British government official told Reuters.
Meanwhile, British Transport Police says armed officers will patrol some United Kingdom trains for the first time because of the increased threat of extremist attacks.
It was the latest of a series of leaks to U.S. journalists that appeared to come from inside the USA intelligence community, passing on data that had been shared between the two countries as part of a long-standing security cooperation. "There will be more arrests".
A sweeping counterterrorism operation has been underway since the attack on Monday, with 11 arrested, including two picked up on Saturday.
One woman arrested by armed police on Wednesday was released a few hours later without charge, leaving 10 men still in custody on Thursday, including suspected killer Salman Abedi's father and brother in Libya.
Police said they had built up a "detailed picture" of his movements since he returned to British shores on May 18, reportedly from his family's native Libya.
Though authorities have made "enormous progress" in the investigation, further arrests are likely, the head of the Greater Manchester Police Ian Hopkins said.
Some hours later, police cordoned off a large area in the Moss Side area of south Manchester and houses were evacuated with a bomb disposal unit sent to the scene. Photos showed an army bomb-disposal unit at the property.
