Australian band Thirty Merc has confirmed its stage manager has been killed and its drummer is in a critical condition after a car crash in western Victoria.

"With the heaviest of hearts, we share this utterly tragic news," the band said on its Facebook page.

Loading

"The band is absolutely shattered."

The pop rock group says it has returned to Melbourne to be with its touring drummer, Mick Skelton, who is in intensive care.

The group's stage manager Shane Cooper died in the crash.

"Our deepest thoughts and prayers are with Shane and Mick's families in this time," the band said.

Victoria Police confirmed on Tuesday that a man died following a fatal collision in Streatham about 2:30pm that day.

Police said the driver died at the scene and his male passenger was taken to hospital.

The band, which was at the start of a new tour, said it would reschedule its upcoming shows.

Police have called for anyone with any information on the crash to contact Crime Stoppers on 1800 333 000.