A 13-year-old girl has been stabbed outside a school in South Gloucestershire.
It is not yet known what weapon was used in the attack
The teenager was taken to hospital with injuries to her abdomen but these are not believed to be life-threatening.
Filton High School said the incident involved a Year 9 pupil and someone from outside the school during morning break on Monday.
A 14-year-old girl believed to be from a nearby school has been arrested and is being questioned by police.
There are no details of the weapon used at present.
An Avon and Somerset Police spokesman said: "At 11 am this morning [Monday] police were called to Filton school campus following reports of a 13-year-old girl receiving a stab to the abdomen, the girl was transferred to Frenchay hospital - her condition is not life-threatening.
"A short time later a 14-year-old girl was arrested and is now being questioned at Staple Hill police station
"A number of witnesses saw the attack and police are currently working with the school and education authorities to question them."
A Frenchay Hospital spokesperson said the girl's condition is stable
Brian Freeguard, councillor for the Filton ward on South Gloucestershire Council, said: "It shocks me that a girl of that age has been involved in a stabbing - especially that something like this could happen in what is a reasonably controlled area.
"This is going to be a setback for the school," he said.
Children at Filton High School were sent home with letters to their parents explaining what happened and offering counselling to any child affected