A Sutton Bridge home was raided by burglars brandishing a screwdriver and a knife in a “terrifying ordeal” on Tuesday night.
The incident happened around 6.30pm on New Road.
Nobody was injured in the incident, but jewellery was taken.
South Holland Police issued a statement, saying: “We are appealing for information and dash cam footage following a burglary which was reported at 6.38 pm on January 18.
“The offenders smashed a rear door and threatened the residents in their home using a screwdriver and a knife.
“No one was injured but this would have clearly been a terrifying ordeal.
“The offenders left with a number of items of jewellery.
“Were you driving along New Road on the night in question? We are specifically asking for people who were in the area between 6.15 and 6.45 pm.
“If you saw anything suspicious, or you may have captured footage on your dash cam, we urge you to get in touch.
“We believe there were four offenders who left the scene in a black hatchback.”
Anyone with information is asked to call 101 with incident reference 348 of 18 January or email firstname.lastname@example.org with the incident number in the title.
Or, you can call Crimestoppers, anonymously, on 0800 555 111.