Police questioning a teenager who was allegedly at the wheel of a car which killed a young child at a caravan site have been given an extra 12 hours to hold him.
A seven-year-old boy was knocked down and later died from his injuries in hospital after the accident at around 3pm on Saturday.
A 16-year-old boy was allegedly driving the BMW car involved in the accident at Shirenewton caravan site, east of Cardiff, south Wales.
He was arrested by South Wales Police yesterday afternoon on suspicion of causing death by dangerous driving.
Earlier, police revealed that young children at the caravan site may be key witnesses to what happened and have urged their parents to come forward.
"Police investigating a road traffic collision on the Shirenewton Caravan Site in Cardiff have been granted a further 12 hours to question a 16-year-old boy arrested on suspicion of causing death by dangerous driving," a spokesman said.
Officers have said that the car involved in the tragic collision was a red BMW 3 series estate.
The seven-year-old victim of the accident, who has not been named, is described as being from the caravan site.
Specially trained police officers are with his family.
Anyone with information is asked to contact South Wales Police on 101 or Crimestoppers anonymously on 0800 555 111.