A 17-year-old girl has been stabbed at a high school in South Australia’s Riverland region and is in a serious condition.

The school was placed into lockdown while an ambulance was called.

An 18-year-old female student has been arrested.

Police and paramedics were called to the Renmark school just before 2.40pm.

Paramedics and staff at the school treated the victim shortly before police arrived.

The SA Ambulance Service said the injured student had been transported to Riverland General Hospital in Berri.

BREAKING: There has been a stabbing at Renmark High School. A 17-year-old female student has been taken to the local hospital with a serious wound and another teenager is in police custody. The latest in 7 News at 6pm. #7News pic.twitter.com/UsfjtaT6MT

— 7NEWS Adelaide (@7NewsAdelaide) July 24, 2018

Students at the school told ABC Riverland that the students involved were in Year 12.

Parents said the school had not informed them.

In a statement the South Australian Education Department said it was working to ensure support for students and staff and it did not believe there was a “specific threat to the wider school community”.

“The Department for Education is liaising with the school to ensure appropriate responses are put in place, including counselling and support for students and staff,” the statement read.

“An assessment is being made as to whether additional security measures are required.

“The lockdown has been lifted and the general student population released to go home.”

–ABC