Neighbours of a murdered woman who have CCTV fitted around their homes have been urged to let detectives review recordings.
Anne O'Neill, 51, died after being attacked at a house on Ardmore Avenue in Finaghy, Belfast in the early hours of Saturday morning.
PSNI officers appealed for people who live in the area to come forward.
Detective Chief Inspector Geoffrey Boyce said: "I am appealing for anyone who resides in the Ardmore Avenue and Ardmore Park area of Finaghy and who have CCTV installed at their address to contact detectives."
The murder inquiry is being led by officers at Musgrave police station.
The PSNI said two men, aged 23 and 27, arrested on suspicion of murder remain in police custody.
Ms O'Neill is understood to have suffered head injuries before she died.
Sinn Fein MLA Mairtin O Muilleoir also said local people reported hearing a woman's screams around the time of the attack.
Later, police were granted another 36 hours to continue interviewing the two arrested men.