Screenshot of the Greater Manchester Police's tweet.‍ (CGTN)

British police have made two more arrests in connection with Monday's concert attack, bringing the total number in custody to eight, Greater Manchester Police said in a tweet on Thursday.

One of the men was detained following searches of an address in the Withington area of the city, while another was arrested in a part of Greater Manchester that was not disclosed.

A woman detained late on Wednesday has been released by police without any charge after questioning.

On Monday, 22-year-old Salman Abedi detonated a homemade nail bomb inside the foyer of Manchester Arena when people were leaving a concert, killing 22 and injuring 64.

Interior Minister Amber Rudd said earlier that up to 3,800 soldiers could be deployed on Britain's streets in the wake of the bombing amid warnings that another attack may be imminent. An initial deployment of 984 had been ordered, first in London and then elsewhere.

Meanwhile, Britain also blamed US officials for leaking details about the attack to US media. The National Police Chiefs' Council said the leaks undermine the investigation into the atrocity.

The Guardian said that Prime Minister Theresa May will confront US President Donald Trump over the leaks of key intelligence when the two meet on Thursday at the NATO summit meeting in Brussels.