A fifth person is being interviewed by police investigating the disappearance of a mother-of-three from Cheetham Hill in Manchester.
Rania Alayed, 25, was reported missing from home on Tuesday 2 July 2013.
Detectives say it is 'extremely out-of-character.'
A 34-year-old man from Gorton was arrested yesterday on suspicion of assisting an offender.
Officers are continuing to interview a 33-year-old man arrested on suspicion of murder and two men, aged 38 and 64, and a woman aged 55, on suspicion of assisting an offender.
More top news
Former Police Inspector Harry White told the inquests that he was told that fans entering the terraces should "find their own level."
The murder of a woman who was stabbed to death by her ex husband in Southport could have been prevented by police, a watchdog has found.
TV chef Tom Kerridge is the headline act at the Liverpool Food and Drink Festival, which starts on Friday.