Police in Manchester say a 23-year-old man has been arrested in connection with the Monday night bomb attack.

“With regards to the ongoing investigation into last night’s horrific attack at the Manchester arena, we can confirm we have arrested a 23-year-old man in South Manchester,” Greater Manchester (G.M.) Police said in a statement.

Another tweet on the G.M. Police's Twitter handle also read: “A man has been arrested at the Arndale Centre – This is not currently believed to connected to last night’s attacks”.

The police further urged people to avoid Manchester city centre to allow emergency services to continue to work at the scene of last night’s incident.

“An emergency number is available for those who are concerned about loved ones or anyone who may have been in the area,” the statement further read.

The road network around the area is busy at the moment, with a number of roads closed and buses affected.

The suicide bomber had detonated Improvised Explosives Device, while people where leaving the arena after Ariana Grande’s performance.

The singer said she was broken.

President Donald Trump of the United States has also condemned the attack, calling terrorists evil losers.

At least 22 persons, some of them children, were killed in the attack and police are investigating the incident.

Fifty-nine others were injured, with some having life-threatening injuries. They are being treated at different hospitals in the city.

Part of what the police want to confirm is whether the attacker has link with any known terrorist group.

Names of victims are being released and Ariana Grande 'superfan', Georgina Callander, is the first of 22 Manchester victims named.

Some parents are still looking for their children after the attack separated them as they scamper for safety.