Overview
- Lainie Williams, 17, was named locally as the victim, and her mother, Rhian Stephens, 38, is being treated in hospital for serious injuries.
- Gwent Police arrested an 18-year-old man from Newbridge on suspicion of murder and attempted murder and say they are not looking for anyone else.
- Officers, including firearms units, responded to Wheatley Place at about 7.15am, with the Welsh Ambulance Service and two Wales Air Ambulance helicopters attending.
- Relatives and local media report claims of a break-in by a knifeman and that Lainie tried to protect a younger sibling, accounts not confirmed by police.
- Friends and family have posted tributes and launched fundraising for a funeral, while police urge anyone with information to contact them quoting log 2500361653.