Oliver Peterson: Australian correspondent on the NSW bus crash that killed 10 people and injured 25 - Heather du Plessis-Allan Drive

The causes of a fatal bus crash in New South Wales won't be known for some time.

10 people are dead and 25 others injured after a bus carrying wedding guests rolled in the Hunter Valley.

The 58-year-old driver has been arrested and charges are pending.

Australian correspondent Oliver Peterson says investigations are underway into the weather conditions and the state of the driver.

LISTEN ABOVE

See omnystudio.com/listener for privacy information.