The parents of a toddler have been arrested after he was left in a locked car in "dangerously high" temperatures, police said.
The "visibly distressed" child was taken to hospital with heatstroke after about 30 minutes in the car at a retail park in Newcastle-under-Lyme.
Police forced the vehicle open as temperatures reached 25C (77F) at 18:00 BST on Tuesday.
A woman, aged 24, and man, 28, have been arrested on suspicion of neglect.
'Could have died'
The todder was taken to the Royal Stoke University Hospital where he was also treated for the effects of dehydration.
Det Ch Insp Amanda Davies, from Staffordshire Police, said: "This incident could have easily resulted in a child dying had a vigilant member of the public not alerted emergency services.
"The boy was clearly distressed and the conditions in the car would have been stifling," she said.
"Thankfully he was not caused any lasting harm but we are treating this seriously and dealing with those responsible for putting him at risk of harm."
The Stoke-on-Trent couple remain in custody.