A picture of the dog believed to have killed a 10-year-old boy was revealed.
Jack Lis was beaten to death Monday at a friend’s house in Pentwyn, Penyrheol, Wales.
The dog was shot dead by armed officers present at the scene.
Gwent police confirmed Wednesday that they had arrested a woman on suspicion of being dangerously out of control for a dog, resulting in fatal injuries.
She was released on bail, police said.
Reputation: Detectives are investigating whether the dog that killed the boy was illegal
The dog has been described by neighbors as an “American bulldog or pit bull” but this has not been confirmed and experts will investigate whether it is an illegal breed.
Tests could be done to check the animal’s DNA while officials question its owners and breeders.
Chief Superintendent Mark Hobrough said experts would “study the dog’s characteristics” to determine if it was a prohibited breed.
He said, “As we investigate, we will remove our scenes from the area and work to identify the breed of dog is also proceeding.
“Since we arrested one person on suspicion of a crime related to the attack and voluntarily spoke to two others, we are trying to find out where criminal matters have occurred.”
Jack and his friend were alone when the attack happened.
His friend sought help from a neighbor who lived several houses down the same street, but the man couldn’t stop the dog.
Paramedics arrived at the scene shortly before 4 p.m. but were unable to save Jack.
Jack’s mother, Emma Whitfield, paid tribute to him on Facebook, writing: “With so much heartache […] I have to tell you that our beautiful boy Jack was hit so tragically yesterday.
“It wasn’t our dog, nor did it happen to our family. He was out to play.
‘We love you so much, our sweet sweet boy.’
Two men voluntarily visited the police station in connection with the crime.
The 34-year-old from the Mountain Ash area and the 19-year-old from the Caerphilly area were both later released.
Chief Superintendent Hobrough added, “I understand that there is a great deal of interest in our communities.
“It is important that people take into account the tone and language of comments posted on social media about the identity of everyone involved in this matter as part of our inquiries.
“Since this is a live investigation, such comments can affect our ability to bring anyone who has committed a crime to justice.”
Anyone with information is urged to report to the Gwent Police Department.
Observe: Boy was trapped in the house with a “large and powerful” animal