UPDATE: US officials identify bomber that killed 22 people as Salman Abedi
The Latest on the blast at an Ariana Grande concert in northern England (all times local):
Officials in the United States say British authorities have identified the suspect in the Manchester suicide bombing attack as Salman Abedi.
A U.S. official confirmed the identity Tuesday to The Associated Press. No additional details were immediately available.
The bombing Monday night at an Ariana Grande concert in Manchester killed 22 people and sparked a stampede of young concertgoers.
The Islamic State claimed responsibility, but Dan Coats, the U.S. director of intelligence, says that connection has not yet been verified.
The house where British police performed a controlled explosion as part of their investigation into the concert blast in Manchester is in an ethnically mixed suburb in the city.
Police raided a modest red brick semi-detached house in Fallowfield in south Manchester on Tuesday, and forensics officers were coming and going into the house. Neighbors said they had heard the bomber lived there, but most said they knew little about the inhabitants of the house, except that several people lived in it.
Neighbor Natalie Daley said she was frightened by a loud bang on Tuesday afternoon, then police yelling "get in your houses - get away from the windows!"
She said she was shaken by how close to home it was. She said: "When it's like two seconds from your house, when you walk past it every day, you do live in fear."
Police on Tuesday also raided another residential road, and arrested a 23-year-old man at a third location in Manchester.
The United States' top intelligence official says the U.S. government has not yet verified that the Islamic State group is responsible for the Manchester attack.
Dan Coats, the director of national intelligence, told Congress that the extremist group frequently claims responsibility for terror attacks.
The Islamic State group says one of its members planted bomb in crowds in the suicide attack at an Ariana Grande show Monday night that left 22 people dead. The group warned in a statement on social media that more attacks are to come.
Testifying Tuesday before the Senate Armed Services Committee, Coats says though he was aware of the IS claim of responsibility, U.S. authorities hadn't yet verified that.
He says the Manchester attack is a reminder the terrorist threat is real. He says, "It's not going away and it needs significant attention."
The Department of Homeland Security says there is no evidence of credible threats against music venues in the U.S., as England reels from an explosion at an Ariana Grande concert late Monday.
The department says the U.S. public may experience increased security in and around public places and events.
DHS says it is closely monitoring the situation at Manchester Arena and working with U.K. officials to obtain additional information about the cause of the explosion.
The government is urging U.S. citizens in Manchester to heed directions from local authorities and be vigilant about their security.
The explosion killed at least 19 people and injured dozens. Police say they are treating as a terrorist attack.
Frantic loved ones of young people missing after an explosion at an Ariana Grande concert have taken to Twitter and Instagram with their photos and pleas for help.
Many Manchester residents responded early Tuesday with offers of shelter and details on locations where displaced concert-goers had been taken in.
The 23-year-old Grande, true to her youthful fan base, is a social media phenomenon with 105 million followers on Instagram and 45.6 million followers on Twitter. Her fans, proud "Arianators," were among those who took to Twitter with prayers and tears.
Fellow stars offered condolences as well.
Taylor Swift tweeted, "My thoughts, prayers and tears for all those affected by the Manchester tragedy tonight. I'm sending all my love."
Ellie Goulding, Cher (fresh from a big night at the Billboard Awards) and Katy Perry were among others to tweet their support.
Greater Manchester Police say they are working with national police and intelligence agencies in what is being treated as a terrorist incident.
Police said Tuesday morning they are still gathering information about the incident and are setting up a telephone hot line to help people locate loved ones. Police said there are 19 confirmed deaths.
Authorities are also asking the public to stay away from the area around Manchester Arena where an explosion disrupted a crowded pop concert by American artist Ariana Grande.
The British government is planning an emergency Cabinet meeting for later Monday morning.
British Prime Minister Theresa May says the government is working to learn the full details of the blast that killed 19 people at an Ariana Grande concert Monday night.
May says the government is trying to establish "the full details of what is being treated by the police as an appalling terrorist attack."
She said her thoughts are with the victims and the families of those who have been affected.
The government is expected to call an emergency cabinet meeting to deal with the incident.
Greater Manchester Police say 19 people have been confirmed dead in an explosion at Manchester Arena that is being treated as a possible terrorist attack.
Police said roughly 50 people were injured. Police said the incident started at 10:35 Monday night at an Ariana Grande concert.
Emergency vehicles were on the scene helping the injured and bomb disposal units were later seen outside the venue.
There was mass panic after the explosion at the end of the concert, which was part of Grande's The Dangerous Woman Tour.
Bomb disposal units were seen at Manchester Arena after an explosion during an Ariana Grande concert.
They were called after reports of an explosion that police said caused fatalities.
There were few immediate details and trains into the area were suspended.
A representative of Grande's US record label says the singer is OK and they are investigating what happened.
Police says there are "a number of fatalities" after reports of an explosion at an Ariana Grande concert in northern England.
Police advised the public to avoid the area around the Manchester Arena Monday night.
There were no immediate details of what happened during the concert by the American singer.
Video from inside the arena showed concertgoers screaming as they made their way out amid a sea of pink balloons.