The four teenage boys who died in a car crash in Wales died of drowning, an inquest has heard.

Jevon Hirst, 16, Harvey Owen, 17, Wilf Fitchett, 17 and Hugo Morris, 18, were pronounced dead at the scene when they were discovered last week.

The four boys were found in an overturned, partially submerged car in Gwynedd, north Wales.

A major search was launched for the A-Level students after they did not return home from a camping trip.

The teens had been missing since Sunday, 19 November.

An upturned silver Ford Fiesta was discovered in water two days later.

An inquest opening heard that post mortem examinations on all four boys showed the provisional cause of death to be drowning.

Kate Robertson, senior coroner for north west Wales, said: "All four were travelling in a motor vehicle along the A4085 when the vehicle left the road, leading to their deaths."

Robertson told the hearing that the police investigation was "ongoing".

"Only when it's complete will a full inquest take place," she said.

"At this time, speculation is unhelpful and compassion will achieve more than media curiosity."