Detectives investigating the suspicious death of a woman in the Strathfoyle area of Londonderry last night released the woman's son and another man on bail pending further inquiries.
Police have also launched an appeal for information about the whereabouts of Paula Carlin (45) before Tuesday, when her body was found at her Clonmeen Drive home.
Police arrested her 21-year-old son Liam late on Tuesday evening in relation to the death.
The second man was arrested at his home on Wednesday.
He is believed to be a friend of Liam Carlin.
The pair were released on bail by police last night pending further inquiries.
Anyone with information about the whereabouts of Paula Carlin in the days before she died is asked to call 0845 600 8000 and ask for detectives in Maydown.