Donaghadee: a woman arrested by police probing the murder of Sarah Montgomery has been released
A 28-year-old man remains in custody
A 42-year-old woman arrested by the PSNI investigating the murder of 27-year-old Sarah Montgomery in Co Down has been released unconditionally.
Police said a 28-year-old man who was arrested on suspicion of murder over the weekend remains in police custody.
Pregnant mother-of-two Ms Montgomery died at her home in Donaghadee on Saturday.