More than a dozen GPS systems have been stolen in less than a week as thieves target tractors and agricultural equipment across Norfolk.

Police are urging farmers and landowners to be vigilant after 13 GPS systems were stolen from different locations in the space of seven days.  

In Great Ellingham suspects damaged the lock of a tractor between 4.30pm on Thursday, November 24, and 11am on Friday, November 25, and stole a Topcon GPS monitor. 

Elsewhere, in Marsham, suspects stole two GPS domes and screens from two tractors between 4pm on Wednesday, November 23, and 7.30am on Monday, November 28. 

A GPS dome and screen from a Massey Ferguson tractor, a GPS dome and an iPad from a John Deere tractor, and two John Deere Dome GPS satellites from two John Deere tractors were stolen in Wroxham.

In addition, an Ag Leader GPS dome and satellite screen were stolen from a crop sprayer and two Timble screens were stolen from another crop sprayer.

The thefts happened sometime between 7pm on Monday, November 28, and 6am on Tuesday, November 29. 

In Salhouse suspects damaged the locks of three tractors and stole one Trimble screen and two Fendt GPS screens, as well as 1,500 litres of red diesel between 4pm on Monday, November 28, and 4.30am on Tuesday, November 29. 

And in Frettenham, suspects stole a Trimble EZ 500 New Holland GPS system from a tractor between Saturday, November 26, and Wednesday, November 30.

Norfolk Constabulary’s rural crime officer, PC Chris Shelley, said: "We received one report of a GPS theft in October and now 13 GPS systems have been stolen in the space of seven days, so clearly this was a targeted effort to steal high-value agricultural equipment. 

"With the nights drawing in, there are more opportunities for criminals to strike during hours of darkness so please take every step to secure your equipment – I know how expensive GPS systems are and how crucial they are to businesses in our rural communities. Please report any suspicious activity to us."

Officers are investigating whether the thefts are linked.

Any witnesses or anyone who witnessed any suspicious activity in these areas at the times stated above is asked to call PC Shelley on 101. 

Alternatively, they can contact Crimestoppers anonymously via 0800 555 111.