Horncastle Police are appealing for witnesses to an attempted theft at a shop in Bull Ring, Horncastle, on Tuesday (July 19).
PCSO Nigel Wass said that two people were involved, a male and female, who were both of slim build and in their early twenties.
The man had shaven head and goatee beard, and the woman had very long bushy dyed hair.
The pair tried to distract the shopkeeper so they could gain access to the till.
PCSO Wass said: “Please be aware and if you have any information or have witnessed this please call 101, quoting incident number 231 of July 19.”
Alternatively, call CrimeStoppers anonymously on 0800 555111.