A 10-year-old girl was killed in a horror school holiday tragedy in Gunnedah this morning.

A Triple Zero call alerted emergency services about 7.15am and they rushed to the house but the 10 year old died at the scene.

A 14-year-old girl was arrested at a family farm in Gunnedah and the incident has shocked the community and police.

While not releasing any more details, the police have set up a crime scene and investigations are still continuing.