Power tools have been stolen by thieves breaking into vehicles parked on Sheffield streets.
Overnight, tools were stolen from a van parked in Owlthorpe Lane, Mosborough, with police officers believing that a 'remote unlocker' may have been used to gain entry.
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Yesterday, tools were stolen from a vehicle on Meadowcroft Rise, Westfield, while contractors were working on a nearby home.
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Thieves struck between 8am and 11am and drove off from the scene in a silver car.
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Between 8am on Tuesday and 6am on Wednesday a remote unlocker is believed to have been used to break into a van on Fitzalan Road, Handsworth, for the tools stored inside.
A South Yorkshire Police spokesman said: "To van owners or those who store power tools please ensure these are removed wherever possible from your vehicles.
"Whilst we appreciate the size, weight and quantity you may have often is the case they are left inside vehicles at the convenience of the owner, it can be very costly to have to replace just a couple of items let alone a van full of tools.
"Often is the case that those who take out tool cover on their insurance may only be covered up to a threshold limit and may have to fund the replacement of some items.
"Please lock vehicles when working on premises nearby and park on driveways and in sight of CCTV wherever possible. Ensure locks and alarms are working and mark up any belongings with black marker pen or UV marker pens with your house number, postcode and name."