Avon and Somerset Police are appealing for the public’s help in tracing the movements of a red Peugeot 107 as part of a murder inquiry.
The body of Karina Batista, 40, was found at a property in Kensington Park at about 10.20am on February 13.
A post-mortem examination found she died from multiple injuries to the upper body.
A 36-year-old man has been arrested on suspicion of murder and remains in police custody.
As part of their investigation police say they want to hear from anyone who saw the red Peugeot 107 between 3.15am and 6am on February 13.
They believe the car, which has a hubcap missing from the front left wheel, was in the Keynsham area at the time.
Police are also looking for a gold Samsung Galaxy S7 Edge mobile phone which may have been disposed in Keynsham at around 4am.