A motorcyclist has died after his bike crashed into a kangaroo on a rural stretch of road in Appin.
The man, aged in his 50s, and the animal died at the crash site on Wilton Road just after 4am on Friday.
Inspector Bill Slatford, the duty officer at Campbelltown Local Area Command, said the motorcyclist may have been heading to work when he crashed into the kangaroo, which appeared to have jumped out onto the road.
A motorist who arrived at the crash a short time later attempted to provide first aid to the rider, however he died at the scene, near Broughton Pass.
"It's quite a winding road up through Broughton Pass," Inspector Slatford said.
"The edge of the road is quite close [to the bush].
"There are no skid marks, it does just appear to be a terrible accident."
He said the body of a kangaroo was found near the wreckage of the motorbike.
A NSW Ambulance spokesman said while quite a few motorists were involved in collisions with kangaroos each year, it was rare for people to be injured or killed.
Traffic is being diverted at the crash scene on Wilton Road.
Police have appealed for anyone who saw the crash to contact Crime Stoppers on 1800 333 000.