The four girls were pupils at Glyncoed Comprehensive

Katie Roberts and Danielle Caswell, who were 15, and 16-year-olds Louise Jones and Kayleigh Parry, were all students at Glyncoed Comprehensive.

They were in a Vauxhall Corsa driven by a male friend when the crash happened, near Llangynidr on Thursday. He and the front seat passenger survived.

All weekend, tributes to the girls have been laid at the scene and the school.

By Monday morning, hundreds of bouquets and soft toys had been left as a tribute at the gates of the school where the four girls were due to study for their GCSEs.

Prayers were also said at services in the town on Sunday.

Family and friends have laid hundreds of tributes

On Monday, although the girls' school was officially closed for teacher training, counselling was available for teachers, parents and pupils.

Counsellors will also be on hand when students return to school after the half term break on Tuesday.

The Vauxhall Corsa the girls were travelling in crashed and rolled 70ft from the B4560 in the crash near the village of Garnlydan at about 2120 GMT on Thursday.

All four died at the scene. The car driver and front seat passenger, both 17-year-old boys, were taken to hospital at Abergavenny where they are still being treated for injuries.

The cause of the fatal crash is under investigation

School governor Malcolm Williams described the girls as talented and said two of them had been due to take lead parts in a forthcoming school production.

"It's a tragic time for all the families and the school as a whole," he said.

Mr Williams said the community was pulling together.

"They're doing a wonderful job for the families and the pupils," he added.

The school's chairman of governors, Ioan Edwards, said coming to terms with the deaths of the four girls would be a "long-term situation" within the school.

He said he thought there would be a memorial, which would be discussed later that day.

'Dangerous road'

Police are still investigating the cause of the crash which happened in road conditions described as cold, but not icy.

Supt Dean Richards said: "We really need to piece together now exactly what has happened prior to the accident and then obviously look at the exact cause of that accident."

There have been several accidents at the same spot on the road across open moorland during the last few years and concerns about its safety have been raised.

Police have appealed for witnesses to contact them on 0845 330 2000.