The four remain in custody along with a man who was arrested earlier in the week.
Detectives investigating the murder of Wayne Reid in Coleraine have arrested four people.
Three women, aged 39, 33 and 28, and a man aged 41 were arrested on Friday, January 16 on suspicion of murder and remain in custody at this time.
A 33-year-old man arrested on suspicion of murder on Wednesday, January 14, remains in custody.
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