Detectives in England have said they were investigating a fireworks display next to the scene of one of Britain's worst-ever motorway pile-ups in which seven people died.
Police have removed all 34 vehicles involved from the M5 motorway near Taunton in southwest England and are searching the remaining debris for any personal effects.
The multi-vehicle collision happened at 8.25pm on Friday in wet and foggy conditions, sparking a huge fire that engulfed several trucks and cars.
Besides the seven people killed, 51 others were injured.
Police said they were focusing on a fireworks event at a rugby club next to the carriageway.
The club insisted its display had ended by 8.15pm, ten minutes before the pile-up.
"We have recovered all of the vehicles involved in the collision and also, sadly, all of the deceased persons," said incident commander Assistant Chief Constable Anthony Bangham of the Avon and Somerset Constabulary.
"Our main line of inquiry has now moved towards the event that was on the side of the carriageway.
"We do believe that whilst there was fog and difficult conditions in the area, that actually, from witness evidence, there was very significant smoke across the carriageway that, in effect, caused a bank similar to a fog bank that was very distracting and very difficult to drive through.
"We're going to look at who gave permission, how the event was organised."
People in England mark Guy Fawkes Night on 5 November, commemorating the failure of Fawkes' 1605 Gunpowder Plot to blow up parliament and King James I.
One of the major annual events in the calendar, bonfire and fireworks parties are held on the night itself or weekend nights nearby.
Emergency crews spent the night searching burnt-out vehicles and the debris littering the northbound triple carriageway on the principal route through the southwest.
Formal identification of the bodies recovered will take place in the coming days.
Edmund King, president of the Automobile Association, said it was Britain's worst traffic accident in two decades.
The last comparable incident being a 51-car crash on the M4 motorway in March 1991 in which ten people died.
Footage taken minutes after the crash showed motorists risking their own lives amid the flames to prise open vehicle doors and rescue people trapped inside.
Witnesses described multiple explosions and towering flames, which caused a huge plume of smoke at the scene.
"We could hear people screaming in their cars. It was utter carnage," said motorist Thomas Hamell, 25, who narrowly avoided the chaos as he came to an abrupt halt next to a jack-knifed truck at the edge of the crash site.
"We sat there and heard the thud of cars, one after another, hitting each other and thought we would be next."
Mr Hamell said that he had managed to carry a baby to safety as chaos raged around him.
Casualties were taken to two nearby hospitals, with their injuries ranging from simple limb fractures to more complex chest and abdominal trauma.
