Three men dressed in all black, with their faces masked, have injured a woman in her 50s and an 11 year old boy in their home in Skegness.
The burglars forced their way into the home and threatened the family inside, stealing a sum of cash before exiting.
The woman and boy received minor injuries.
Investigating officer DS Wright said: “Thankfully no one was seriously injured but nonetheless this would clearly have been a terrifying ordeal. We are asking anyone who has information that could help us identify those responsible to please come forward.”
Police are now appealing for witnesses of the burglary on Philip Grove in Skegness. Anyone who saw or heard anything suspicious is asked to urgently call Lincolnshire Police.