Four men have been jailed and three more given suspended prison sentences for being involved in the theft and sale of more than £1m worth of sat-navs from Nissan's Sunderland car assembly plant.

They include a father and son, Anthony Ganley who ran a shop called Tony's Car Radios in Sunderland and his son Stephen who worked at the Nissan plant.

Bosses at the factory had tipped off the police after 235 satellite navigation systems, worth a total of £615,000, went missing over a three-month period at the end of 2011.

A further pallet of sat-navs, worth a total of £251,000, was taken from the plant in February 2012, and other pallets still remain unaccounted for.

When police launched an undercover investigation, codenamed Operation Broadway, officers were led to the Ganleys, Newcastle Crown Court was told, and discovered they had been selling stolen satellite navigation systems through the shop and via eBay.

The two Ganleys and van drivers Kris Beckwith and David Evans were all jailed for their involvement in the theft, while Neil Crossan, Paul Burrell, David Whitfield and Lee Myers received suspended prison sentences for conspiracy, reports the Sunderland Echo.