An eight-year-old boy has died in hospital after being hit by a stolen car on a cycle path on Teesside.
Daniel was described as a loving and caring child
Daniel Conroy Curtin was left fighting for his life after the incident on 16 May near Newport Bridge, Middlesbrough.
A Cleveland Police spokesman said three people had earlier been charged in connection with the incident.
He said they were considering whether to charge the person they believe was behind the wheel with causing death by dangerous driving.
Daniel died in Middlesbrough's James Cook University Hospital overnight.
Doctors said the youngster had developed a swelling on his brain.
Det Sgt Keith Dee of Cleveland Police said: "From the early stages it was always possible that he would die because of the severity of his injuries.
"He was an absolutely lovely kid, well-loved by friends and family and he will be sadly missed. It is absolutely tragic.
"His mother is devastated. She has been by his bedside for the last 10 days at the James Cook University Hospital and she is absolutely shattered.
"She managed to get some sleep last night, thanks to the doctors."
A 15-year-old boy appeared in court last week accused of aggravated vehicle taking and was remanded to secure accommodation.
A police spokesman said that charge would be reviewed following Daniel's death.
Discussions with the Crown Prosecution Service will take place later.
Two 19-year-olds and a 15-year-old have been charged with being carried in a vehicle taken without consent.
A 14-year-old is currently on police bail pending further inquiries.
Clare Conroy described her son as "a loving and caring child".
She said: "Daniel would never let you cry and he would make sure you were OK before he would leave you."
Daniel lived with his mother, who is estranged from his father John, and a sister in Ayresome Road, Middlesbrough.