Police investigating the murder of a secretary strangled in her own home are looking into her past relationships to try to find a motive for the killing.
Ms Thrussell led a private lifestyle
Officers have spoken to friends, family and colleagues of June Thrussell, who was found dead on Friday in Dagenham.
The 56-year-old had separated from her husband a long time ago, investigators said, but had apparently been in several relationships since then.
CCTV images of Ms Thrussell's last sighting on 14 June have been released.
The stills show the insurance company secretary leaving her office building at Valentine's House in Ilford Hill, Ilford.
"Her usual route home was by rail from Ilford to Chadwell Heath station, and from there on foot," said Det Ch Insp Keith Garnish.
"We urge anyone who may have seen June that day to contact us."
Mr Garnish said he had yet to find a motive for the killing following initial inquiries into Ms Thrussell's background.
Ms Thrussell was last seen on 14 June
Her body was found at her house, where she lived alone, on Pedley Road after a colleague called to say she had been missing for days.
Police have not ruled out the possibility she was attacked by an intruder or burglar but said there were no signs of forced entry.
Officers interviewed a former boyfriend of Mrs Thrussell, a 47-year-old Tunisian, who had lived with her for several years but stressed he was not a suspect.
Police are hoping to release shortly CCTV footage of her journey home from work as part of their witness appeal.