Police are hunting a woman in her 60s who held up a post office in Manchester.
The woman, believed to be aged between 65 and 70, entered the shop on Palatine Road in Northenden, on Thursday morning.
She was armed with a knife and threatened the cashier demanding money.
Staff activated the alarm and the woman fled empty-handed. She is described as white, about 5ft 2in tall, with dark hair and a purple coat.