IDAHO CITY - A motorcyclist was flown to a Boise hospital after crashing on Idaho 21 Sunday afternoon.

The single-vehicle crash happened just after 4 p.m. about four miles south of Idaho City.

A Boise County dispatcher tells KTVB that the woman, who was the only person on the bike, had to be taken to a hospital via an air ambulance. There is no word on if she was wearing a helmet, and the extent of her injuries is not known.

The road was blocked for a short time after the crash, and sheriff's deputies were still on scene as of 5:30 p.m.

The cause of the crash is under investigation.