Appeal after girl's M-way tragedy

Police are investigating whether Natalie's drinks had been spiked

A fresh appeal has been made for the public's help after a teenager fell from the back of an ambulance as it took her to hospital.

Natalie Dibden, 16, from Charfield in South Gloucestershire, died later from head injuries after falling out onto the M5 on Sunday.

She was being taken to hospital after collapsing earlier and may have opened the doors in confusion.

A second post mortem examination is also being carried out in the hope it may reveal more about her state.

'Spiked' drinks

Detective Chief Inspector Martin Surl said: "It is very important that we speak to everyone who came into contact with Natalie during the evening of 8 November or the early hours of 9 November."

He said they wanted to hear from anyone who saw the incident on the motorway, or who might have information that could help.

"We know Natalie was socialising with friends in The Warehouse, in Dursley, before being taken ill," said DCI Surl.

Detectives have not discounted the possibility that her drinks had been spiked.

A police spokesperson said: "A full investigation is under way and at the moment we have nothing to substantiate that."

On Wednesday, it was revealed that Natalie's mother Sarah saw her daughter fall onto the carriageway.

She was following the ambulance heading for Gloucestershire Royal Hospital when the incident happened.