Detectives hunting murder a suspect over the killing of a young mother arrested a 25-year-old man on suspicion of assisting an offender, Greater Manchester Police said.
Police are still searching for 28-year-old Michael Cope and have offered a £5,000 reward to anyone who may be able to help him come forward.
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ITV News has obtained exclusive footage of the moment armed police raided a house believed to be linked to the Manchester suicide bomber.
The Manchester Evening News set up a JustGiving page asking people to support the families of those affected by the suicide bombing.
The suspected Manchester Arena bomber has been identified as 22-year-old Salman Abedi by Greater Manchester Police.