Four more people have been arrested in connection with the fatal shooting in Talbot Green on Sunday.
Joanne Penney, 40, was found with serious injuries in the Talbot Green area in Rhondda Cynon Taf on Sunday.
South Wales Police said it was called to the scene at 6.10pm on Sunday evening after reports of a shooting in Llys Illtyd.
Ms Penney was pronounced dead at the scene, despite the efforts of emergency services.
Her family have been informed and her next of kin are being supported by specialist officers.
A 42-year-old man who was arrested on Sunday remains in police custody.
In an update on Tuesday, police said four more people have been arrested in the Leicestershire Police force area in connection to the incident.
A 21-year-old woman from Oadby, Leicestershire; a 27-year-old man from Oadby, Leicestershire; a 68-year-old man from Braunstone Town, Leicestershire, and a 39-year-old woman from Leicester are currently in custody and will be questioned.
Police enquiries have confirmed two vehicles travelled from the Leicester area to South Wales sometimes after 10.30am on Sunday and left shortly after the incident.
Officers are now appealing to the public for any sightings of the vehicles, namely a beige Nissan Note and a black Volvo XC40.
Both vehicles were seized on Monday night and will undergo forensic examinations.
The investigating team are particularly keen for any dashcam or CCTV footage from Llys Illtyd and the nearby retail park between 5.30pm and 6.30pm on Sunday 9 March, which may have captured these vehicles.
‘Working hard to establish a motive’
Speaking at the scene in Llys Illtyd, Detective Chief Superintendent Ceri Hughes said officers were “working hard to establish a motive” for Ms Penney’s death.
She said one possibility under consideration as part of the investigation was that Ms Penney was the victim of mistaken identity.
“Whilst these arrests are a significant development, the investigation into Joanne’s death is continuing and we have teams of experienced detectives and specialist staff working hard to establish the circumstances of this tragic incident,” she added.
“I would urge anyone who has information, either about Joanne’s death, or what happened at the property at Llys Illtyd on Sunday evening to do the right thing and please come forward. The smallest piece of information could be of vital importance.”
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Chief Superintendent Steven Jones thanked the local community for its “support”.
“I understand how concerning this will be for local residents,” he added.
“Increased patrols will be taking place, not only as part of the investigation into Joanne’s death, but to provide wider community reassurance.”
