Three schoolchildren have fallen through a window from the top deck of a bus in Greater Manchester, police have said.
A large emergency response attended following the incident on Bolton Road in Ashton-in-Makerfield shortly before 16:00 GMT.
The children have “potentially serious injuries” but they not thought to be life-threatening, Greater Manchester Police said.
An investigation was in the early stages but Inspector Simon Barrie said it “appears to be an unfortunate accident”.
“This is a serious incident that will cause disruption,” he said.
“Our priority is to make sure the children get the treatment they need in hospital. Thankfully we don’t believe their injuries are life-threatening.”
Councillor Danny Fletcher, of Ashton-on-Makerfield South ward, posted on Facebook and said some of the children had suffered potentially life changing injuries.
“I’ve spoken with our policing team this afternoon,” he said.
“As we know, three young people have fallen from a top floor side window of a school bus and have been taken to Manchester Children’s Hospital, some with potentially life changing injuries.
“I’ve contacted the schools involved to ensure they have council support if needed. Sending my thoughts and all my love to the kids and families involved.”
The road has since reopened.
Transport for Greater Manchester said: “Our thoughts are with those injured and we want to wish them a speedy recovery.
“Emergency services remain at the scene, and we are working closely with the bus operator in supporting police with their enquiries into the incident.”