USA intelligence officials also prematurely leaked information about the suspected bomber on Tuesday, which led to the publication of Salman Abedi's name, as well the fact that the attack was a suicide bomb.
Police said they were urgently seeking to establish whether Abedi worked alone, or acted as part of a larger network.
Salman Abedi, 22, carried out an IED blast at the conclusion of American pop star Ariana Grades concert at the Manchester Arena on Monday that prompted the United Kingdom to raise its terror threat level to the highest category on Tuesday, NBC News reported.
The Islamic State terrorist group has claimed responsibility for the attack.
Here is what we know so far about the terrorist attack at Manchester Arena that targeted young concert-goers.
Iran's Zarif scorns Trump after speech, arms deal
During his quick stop in the region, Trump met with both Netanyahu and Palestinian Authority President Mahmoud Abbas. Trump's choice of allies in the region, and a literal highlighting of the USA leader's own focus on "investment".
Abedi's family have lived in the Fallowfield area of south Manchester for at least 10 years, according to The Daily Telegraph newspaper.
Muye Li, a 23-year-old student who lives on the third floor, said he heard an explosion as police stormed an apartment on his floor. He has been identified as 22-year-old Salman Abedi.
Neighbour Akram Ramadan said the raided apartment was home to a newly-wed couple.
He said the husband, a man in his mid-to-late-20s, was a Mancunian of Libyan descent, while his wife was a maths teacher who had helped his own daughter in her studies.
There was no information released on the man who was arrested.
France's interior minister Gerard Collomb told French television that both British and French intelligence services had information that Abedi had been in Syria.
He did tell reporters that they had "a fantastic meeting" and spoke of what an honor it was, but that was about it. Also read: Trump meets with Pope Francis amid policy clashes that include the environment .
Last July, Mahal resigned with the company and did well briefly teamed with Rusev in an angle against Enzo Amore and Big Cass. Interestingly, his return to the WWE nearly didn't happen. "It's been nearly a year now, it'll be a year next week", he said.
The protesters also condemned Trump's inaction on Israel's harsh treatment of Palestinians on hunger strike in Israeli jails. Tonight, Trump is flying to the Vatican, where he's slated to meet with Pope Francis on Wednesday.
In an unusual disclosure of the movements of US military assets, Trump revealed the USA had two nuclear submarines in the region. He is a commander of the Abu Sayyaf militant group and was wounded by a military airstrike in January.
The newspaper's report led to immediate protests against Temer in Sao Paulo and Rio de Janeiro, also calling for his resignation. Brazil's stock market plunged more than 10% immediately after opening Thursday , wiping out nearly all its gains for the year.
Sabemos que será una final difícil (con Juventus, por la Champions, el 3 de junio), pero ahora toca disfrutar la liga española. La gestión de Zinedine Zidane en el banquillo es uno de los grandes motivos del Real Madrid para la consecución de LaLiga.
Trump's visit to the Eternal City comes after two stops in the Middle East where he visited the cradles of Islam and Judaism. But the timing on Wednesday was tight as Francis had his weekly Wednesday general audience.
Al menos 19 muertos en un atentado en Manchester
La seguridad personal de la cantante esperó junto a los fans hasta que fue seguro salir del Manchester Arena. La policía ha confirmado que está dedicando "amplios recursos" al incidente, entre ellos artificieros.
Father and brother of Manchester bomber arrested in Libya
Officials said all of the bombing victims have been identified , but names were being withheld until autopsies were completed. Al Jazeera's Phillips, reporting from Manchester on Wednesday, said there is anger in the city over the attacks.
Pope offers olive branch to President Trump
He also gave the Pope a piece of granite from the Martin Luther King Jr. "We had a fantastic meeting", the President said. At least a half-dozen protests against Trump were scheduled to take place in Rome on Tuesday or Wednesday.
Off-Duty Police Officer Among Dead in UK Blast
Cities including Paris, Nice, Brussels, St Petersburg, Berlin and London have suffered militant attacks in the last two years. On Wednesday, there will be a minute of silence before Manchester United plays Ajax in soccer's Europa League final.
Fans enjoy Stockholm sunshine ahead of Europa final
United was the clear victor , the players imposing themselves as much through their physicality as their superior game management. Paul Pogba , busy in central midfield early on, scored from the top of the box thanks to a big deflection off Davinson Sanchez.
Chris uses a flip phone
Chris Pine may be a movie star, but he is a man who likes to keep it simple-especially in the phone department. When asked what his biggest quirk is, the " Star Trek Beyond" star said: "I have a flip phone".
Pogba sends grieving Man Utd to emotional Europa triumph
United had little trouble keeping Ajax at bay in the closing stages and the celebrations were euphoric after the match. Mkhitaryan scored United's goal in the 47th minute with a clever flick off a corner kick and a Chris Smalling's header.
Trump Budget Still Funds One Big Climate Program
Kudlow said the budget reminds him of the Clinton administration's welfare reforms that reduced dependence on the dole. A debt-ceiling showdown in 2011 prompted Standard & Poor's to downgrade the USA credit rating for the first time .
Predators shoot down Ducks to reach Stanley Cup Finals
The Predators have a star in Pekka Rinne , and he will have to be their best player in order for Nashville to win the whole thing. He's been the Predators' starting goalie since the 2008-09 season and has now become their most valuable playoff performer.
Listos horarios de la Final de la Liga MX
Las anotaciones del club universitario fueron en el minuto 64 por parte del lateral izquierdo, Javier Aquino . Por su parte Chivas llega a este partido luego de haber empatado a 1 gol con Toluca en la vuelta .