A woman has been arrested following a dog attack near Caerphilly in which 10-year-old Jack Lis died.
The 28-year-old, from the local area, was questioned on suspicion of being in charge of a dog dangerously out of control causing injury resulting in death, before being released on bail.
Police were called to reports of the incident on Monday at 3.55pm in Pentwyn, Penyrheol.
Constables attended and managed to remove Jack from the property, but he died at the scene.
Armed officers later destroyed the dog, which police are working to identify.
Jack was visiting a friend at the property.
Gwent Police sat the 28-year-old has been released conditional bail, and two men voluntarily attended a police station in regards to the offence.
Chief Superintendent Mark Hobrough said: “As we’ve arrested an individual on suspicion of an offence linked to the attack, and spoken to two others voluntarily, we’re looking to identify where any criminal matters have occurred.
“I understand that there is a lot of interest about this in our communities. It is vital that people are considering the tone and language used in comment posted on social media about the identities of anyone involved in this matter as part of our inquiries.
“As this is a live investigation, such comments may have an impact on our ability to bring anyone found to have committed a criminal offence to justice.”