They were patrolling the back road behind Avarua, when they spotted a motorbike lying on its side.
The officers noticed it had knocked over some iron roofing, so they called it in as a motor vehicle crash, at 3.39am.
It looked as if the crashed bike had been abandoned – but they made an unexpected discovery. “They found a young woman lying among plants off the side of the road,” said police spokesperson Trevor Pitt.
She had suffered scratches to the head and was transported to hospital. After being attended to there, she was taken home.
Police were awaiting the blood alcohol test results.