A woman who was murdered in Lisburn on Christmas Day has been named locally as Jayne Toal Reat from Banbridge.
The local mother died from suspected stab wounds at a house in Mornington Lane at around 6am yesterday.
A 19-year-old man has been arrested.
Four ambulance crews were dispatched to the scene and when they arrived, police officers were already attempting emergency resuscitation on one of the injured.
Three injured people were rushed to the Royal Victoria Hospital in Belfast.
The victim’s daughter posted an emotional message on her Facebook late on Christmas Day; a day she says she’ll never forget as her mother “died in my arms”.
Charlotte Reat said: “I just want to thank everyone for all the kind messages and posts. I’m not in the frame of mind to reply to anyone nor am I fit to be writing this status.
She spoke of her heartbreak at watching her mother die, adding: “Today will be a day I will never forget…I can still feel her in my arms and hear her screams of pain and see the panic on her face.”
“My mum died saving me.”
She added: “Jayne Toal Reat, you died saving my life and I just wish I could trade places with you. You’re my hero forever and always and i’ll never forget you and I promise I will get you justice!
“I LOVE YOU MY BEAUTIFUL MUMMY FOREVER AND ALWAYS 25/12/2017.”
The woman, who was one of three understood to have sustained stab wounds, is due to formally identify her mother’s body today.
Detective Chief Inspector John Caldwell said: “Detectives have launched a murder investigation following the death of a woman at a house in the Lisburn area.
“A 19-year-old man has been arrested.”