Former X Factor contestant dies in Australian car crash

Nathaniel had been performed at the Burra Country Music Festival, South Australia and was travelling to Adelaide as he was due to perform at the Tea Tree Gully Hotel that night.

According to Australian Police, he died after his car hit a tree around 11am on Sunday morning - he was the only person travelling in the vehicle.

He died at the scene.

Australian singer Natalie Bassingthwaighte, who was O'Brien's mentor on the reality singing show, tweeted a tribute as soon as she heard the tragic news.

My heart goes out to Nathaniel O'briens family after hearing of his tragic passing. What a spectacular young man with the voice of an angel

— Nat Bassingthwaighte (@nataliebassing) November 8, 2015

Friends and fans of the budding artist also took to Twitter to give their condolences.

So sad to hear about Nathaniel O'Brien. I remember him as such a warm, sunny person. My thoughts are with his family and friends x

— Dannii Minogue (@DanniiMinogue) November 9, 2015

Shattered to hear of the death of @NathanielOBrie1 Nathaniel O'Brien, my dear young and talented friend. Only 19.

— allrounderkj (@allrounderkj) November 8, 2015

The last day I saw this Beautiful Soul @ Red Faces 2015 . Nathaniel O'Brien Thank you for the wonderful memories xoxo — feeling heartbroken

— Grace Bawden (@GraceBawden) November 8, 2015

Ex XFactor contestant Nathaniel O'Brien sadly passed today. Thoughts and prayers are with his family and friends at this sad time.

— Luke Jacobz (@lukejacobz) November 8, 2015

Sending my condolences to the family of Nathaniel O'Brien. Such a shame we won't be able to see you perform anymore. Rest in peace superstar

— zana r ✨ (@zanaaaar) November 8, 2015

I am so shocked to hear the upsetting news. May you rest in peace Nathaniel O'Brien, my thoughts & prayers are with ur family and friends xx

— Leanne Jolly (@Skyblue_77) November 8, 2015