Pictured: Woman, 27, found stabbed to death at £4m home near Hyde Park

Kamonnan Thiamphanit, who was known to her friends as Angela, has been confirmed as the victim

A woman who was stabbed to death at a £4m home in Westminster has been named, as police continue an urgent manhunt for her killer.

The body of 27-year-old Kamonnan Thiamphanit, who was known to her friends as Angela, was found by officers who forced their way into the property on Monday morning after friends raised concerns for her welfare.

Neighbours had heard high-pitched screaming coming from the property in Stanhope Place, which is just a stone’s throw away from Marble Arch and Oxford Street.

The Metropolitan Police has referred itself to the police watchdog after it emerged the force received two calls from her friends on Sunday evening, but failed to act on the concerns until the following day.

Her family have now said they are devastated by her death, with Scotland Yard vowing to catch whoever is responsible.

The scene on Stanhope Place, Bayswater, where her body was discovered (PA Wire)

One elderly woman, who has lived on the street for over half a century, told MailOnline: “I did hear very, very high-pitched screams on Sunday evening coming from that direction.

“A series of screams. I recall two – I’m very sensitive to sound. They were very unusual. There was no other sound other than the screams, then silence after.”

Inside the Grade II-listed terraced home - which dates from the 1820s - near Marble Arch, police discovered the body Ms Thiamphanit, with her cause of death given as sharp force trauma.

Scotland Yard have referred themselves to the IOPC over contact with the victim’s friends (William Warnes/PA Wire)

Detective chief inspector Adam Clifton, who is leading the investigation, said: “My team continues to work tirelessly to piece together the events that led to Kamonnan’s murder.

“I would like to thank local residents for their patience while we have gone about our work at the scene.

“I would appeal to anyone who has information that could assist us, no matter how insignificant you think that may be, to come forward and speak to us.

“Kamonnan’s family and friends have been devastated by this murder and we must ensure whoever is responsible is held to account.”

(William Warnes/PA Wire)

There has been no arrest and inquiries continue.

Scotland Yard referred itself to the IOPC after officers waited around 12 hours before responding to calls from her concerned friends.

The force said in a statement: “The Met’s Directorate of Professional Standards has been informed and a mandatory referral will be made to the Independent Office for Police Conduct (IOPC) in relation to the initial contact from the woman’s friends.”