Mother confirms Olivia Campbell is the latest victim of Manchester bombing

British police on Tuesday identified the suicide bomber who killed 22 people, including children, in an attack on a crowded concert hall in Manchester, and said they were trying to establish whether he had acted alone or with help from others.

Authorities raised the terror threat level to critical, meaning armed soldiers could be deployed at public events.

He said he knew the man from the neighbourhood and the mosque but "in the last 15 years, I haven't seen him in trouble at all". "I know I speak for everyone in expressing my deepest sympathy to all who have been affected by this terrible event and especially to the families and friends of those who have died or were injured".

The University of Salford, based in Manchester, said in a statement that Abedi was one of its students and it was helping the police with their investigation.

A 23-year-old man was arrested Tuesday, according to the Greater Manchester Police Department; more details on the man's identity weren't immediately available. They said this showed the device was built to hurt and kill many.

Grande was performing in Manchester during the European leg of a tour to promote her third album, "Dangerous Woman", which also has her scheduled to visit London, Belgium, Poland, Germany, Switzerland and France in the coming weeks.

The British man believed to have killed 22 people in a suicide-bomb attack here, had ties to Al Qaeda and had received terror training overseas, a U.S. intelligence official said.

"I'm going to find her", Hodgson said earlier.

Police also raided and searched a property elsewhere in Manchester where Abedi's brother Ismail is thought to have lived. ISIS claimed responsibility for the attack, raising public concern around the world about extremist violence.

Prime Minister Theresa May said this means that the likelihood of another attack has gone from "highly likely" to "imminent" during a televised statement.

Here are the steps May said officials were taking in response.

She announced that the country's Operation Temperer, an emergency plan that allows military personnel to support the police's armed forces, was "now in full force".

  • Leroy Wright