Police are urging residents to make sure their homes are secure whenever they are out, asleep or in the garden after burglaries in Chesterfield.
The most recent happened in Somercotes sometime between 7am and 5.30pm on Tuesday, June 3.
Two iPads were stolen from a house on Welbeck Close, and it is believed the offenders may have got in through an insecure window.
In Chesterfield, a set of keys were taken from a house on Holland Road, Old Whittington, sometime between 1pm and 6pm on Friday, May 23. It is thought the offenders entered through an unlocked door.
Community Safety Inspector Russell Dakin said: “We tend to see more of this type of incident, where thieves take advantage of insecure windows and doors, especially as the weather starts to improve.
“These sorts of burglaries can be prevented by taking common sense measures such as locking doors and closing ground floor windows when going to bed, going into the garden or even when just leaving the room.”