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Police have today released CCTV pictures showing the last known movements of nine-year-old Stacey Lawrence and her mother's partner, Darren Walker.

The images were captured at a motorway service station near Peterborough at around 3pm on Friday and show the pair buying dinner.

The Spar lorry in which they had been travelling in can also be seen in shots showing the service station’s forecourt.

Stacey was found dead on Saturday in the cab of the lorry, parked in a lay-by on the A605.

Police believe Walker, 40, made a sexual approach to the girl in the cab of the lorry. When she resisted, he killed her with a piece of black fabric before hanging himself in a lay-by near Warmington, Northamptonshire.