A murder victim died after being stabbed in the chest, police have revealed.
Detectives investigating the death of a man in his 60s are pleading for witnesses to come forward.
Officers were called to Warburton Road in the early hours of Saturday where a man was found seriously injured.
A post-mortem has confirmed he died from a single stab wound to the chest.
A 20-year-old woman from Southampton was previously arrested on suspicion of murder.
However, she has now been released from custody and will face no further action.
Police remain in the Thornhill area of the city and continue to investigate the circumstances of the incident.
Detective Chief Inspector Dal Andrews said: “We are in the early stages of the investigation and enquiries are in hand to establish the circumstances surrounding this man’s death.
“We are urging anyone who was in the Warburton Road area between 9pm on Friday, 24 February and 2am on Saturday, 25 February and has any information that could assist our investigation to get in touch.
“We’re also particularly keen to hear from anyone who has private CCTV footage including ring doorbell that may have captured something between these times.
“Similarly, if you were driving in the area and have dash-cam, please contact us.
“We would like to reassure the local community that we are conducting extensive enquiries to establish what happened and we would again like to thank local residents for your help and understanding while these continue.
“Increased patrols will continue in the area. If you are concerned or have any information, please don’t hesitate to speak our officers.”
Anyone with information is urged to call police on 101 and quote Operation Hibiscus or crime reference number 44230077698.
Alternatively, they can also send information including CCTV footage online by going to www.mipp.police.uk/operation/44HC23W01-PO1 quoting the same reference number
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