The heist of 100,000 eggs from the back of a trailer in Pennsylvania has become a whodunit that police have yet to crack.

The theft of the eggs, which the authorities said were worth $40,000, comes as grocery shoppers across the country are facing empty shelves and higher prices for eggs.

Someone has stolen about 100,000 eggs from a distribution trailer in south-central Pennsylvania as rising egg prices and shortages continue to worry U.S. consumers.