Detectives are linking six domestic burglaries - three of which took place in Ballymena and three in Londonderry.
Cash were taken from five of the houses.
The local burglaries happened at Summerfield Street and Chichester Park Central in Ballymena, and at Raceview Road Broughshane.
They occurred between 6pm on Saturday and 12.30am Sunday.
PSNI Detective Inspector Bob Blemmings said: “I would appeal to anyone who may have noticed any suspicious activity or vehicles in any of these areas to please contact Detectives at Strand Road and Ballymena on the non-emergency number 101.
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