Lincolnshire Police are warning people not to leave valuables in cars after a rise in break-ins in the run up to Christmas.
This weekend alone, the police responded to a large number of car-related thefts.
On December 16/17, thieves forced open a Ford Mondeo boot parked on Burton Road and stole a laptop and suitcase of clothes overnight.
A sat nav was also stolen from a Citroen C3 by smashing a window on Lindum Avenue overnight on December 19/20.
Police warn that the thieves are walking streets looking for valuables on display in cars, much like the two examples.
Thieves are particularly prowling around people doing their Christmas shopping,
They watch people returning to their car, and see if they are dropping off shopping before going again to buy more.
Motorists are being advised not to leave valuables in their cars, and check vehicles are locked when unattended.
If you have witnessed a vehicle crime or have any information regarding car theft, call the police on 0300 111 0300.