Ten people have been killed in a tragic bus crash in the Hunter Valley

Ten people have been killed in a bus rollover in NSW's Hunter Valley last night, as the bus was driving guests to accommodation after a wedding.

Συνεργεία έκτακτης ανάγκης στέκονται κοντά στο μοιραίο λεωφορείο στην κοιλάδα Hunter Valley, βόρεια του Σύδνεϋ Source: AP / Mark Baker/AP

The crash is one of the deadliest in Australia's history.

Emergency services were called to the crash site at about 11.30pm on Sunday at a roundabout on Wine Country Drive near Greta after reports the coach had rolled.

The 58-year-old bus driver was taken to hospital under police guard for mandatory testing and assessment. He was then arrested and taken to Cessnock police station.