A police watchdog has launched an investigation after a crash in Stevenage yesterday which involved an officer’s car and saw a young girl flown to a London hospital.

A spokeswoman for the Independent Police Complaints Commission told the Comet the organisation was notified by Hertfordshire Constabulary of the crash, which took place in Six Hills Way at about 11.40am.

A blue Citroen C3 and a police car – which had been responding to an emergency – were involved.

“We can confirm we were notified by Hertfordshire Police of a serious two vehicle collision, involving a police car, that occurred shortly before midday on Wednesday, July 1,” said the spokeswoman.

“IPCC investigators have been sent to the scene and to the police post incident procedure and the IPCC has declared this an independent investigation.”

The young girl was flown to Royal London Hospital by air ambulance and three people were taken to Lister Hospital in Stevenage following the crash, although no official update on their injuries is currently available.

The Comet also asked the IPCC about the nature of the emergency the police were attending, but a spokeswoman said it was too early to comment.