An 83-year-old woman has died from her injuries after being attacked by a dog in her own home.
The woman died on Tuesday morning after being taken to hospital following the attack in Heol Fawr, Caerphilly, on December 3.
A 55-year-old man who was also taken to hospital with minor injuries has now been released.
Four people arrested on suspicion of being in charge of a dog dangerously out of control causing injury have been released under conditional bail.
The dog, a large black XL bully cross cane corso breed, was seized by officers and has been destroyed.
The attack comes just over a year after a 10-year-old boy, Jack Lis was attacked and killed by a dog, a few streets away from this attack.
Gwent Police has said officers will continue to make enquiries in the local area.
Detective Chief Inspector Matthew Sedgebeer of Gwent Police said: ‘If you have concerns or any information regarding this dog and its previous behaviour then please do stop and talk with us.
‘Alternatively, please call us on 101, quoting log reference 2200407170.”You can also send us a direct message on Facebook or Twitter.
‘Alternatively, you can contact Crimestoppers anonymously by calling 0800 555 111.’
Get in touch with our news team by emailing us at firstname.lastname@example.org.
For more stories like this, check our news page.