A woman had jewellery worth £450 stolen from her in Drayton as she gave directions to a driver.
The bizarre incident happened near the Co-op store in Havant Road, Drayton, Portsmouth.
The 59-year-old woman was stopped by the driver of a small blue car who pulled over and asked for directions to St Mary’s Hospital.
She leant into the vehicle and gave directions but a woman sitting in the front passenger seat then offered the victim a yellow gold chain and put it round her neck.
After she took the chain away the victim noticed that a gold necklace and charm bracelet she had been wearing were gone.
Police said the car passenger was of Asian appearance with long, dark hair in a ponytail and she was about 40.
She had gold teeth in the front of her mouth.
The theft happened on Monday between 1pm and 1.30pm.
Anyone with information is asked to contact PC Nicola Wise at Cosham police station on 101.