An investigation is under way into the death of a man aged 31 who was being restrained by police officers.

The inquiry, by the Independent Police Complaints Commission (IPCC), follows an incident at a hostel in London Colney, near St Albans, Hertfordshire.

The man, who has not been named, was pronounced dead in hospital after officers restrained him so an ambulance crew could give him treatment.

An IPCC spokeswoman said the incident began when two police community support officers were at the hostel on Friday 8th July, attending an unrelated event.

She added that they "were called to a man causing a disturbance in another room".

"They called for an ambulance and for police assistance which arrived shortly afterwards," she said.

"The man was restrained by police to enable treatment to be given.

"He was taken to Barnet General Hospital, but was subsequently pronounced dead in the early hours of Saturday morning."

The death was referred to the IPCC, which sent investigators to the scene overnight. Results from a post-mortem were inclusive.

Rebecca Marsh, IPCC commissioner, said: "By using our own investigators to examine the circumstances surrounding this death, his family, the police and the wider public can have confidence in the independence of the inquiry."