Rocky Curtis, the killer of Sonny Grey, shown on CCTV in a service station
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The jigsaw of CCTV clips that caught Sonny Grey killers

Police pieced together a series of short CCTV clips to help convict the killers of a 70-year-old Lincoln man.

Rocky Curtis and Robert Holmes were each jailed for more than 25 years for the torture and murder of Sonny Grey in October 2011.

The judge in their trial praised Lincolnshire Police's Det Con Adam Battersby for his "remarkable" work tracking down the footage from hundreds of different cameras.