A 44-year-old man has been arrested in Rusholme on suspicion of terrorism offences in connection with the Manchester bombing, police said.
His arrest brings the total number detained to 11, Greater Manchester Police said.
Of those, two people have since been released without charge.
New CCTV of the Manchester bomber Salman Abedi has been released by police.
The younger brother of the Manchester bomber has said Salman Abedi was radicalised online in Britain.