In pictures: Girls caught on CCTV

Police hunting missing schoolgirls Holly Wells and Jessica Chapman want to speak to four people shown on closed circuit television footage on 4 August.

The potential witnesses are seen moments after two girls believed to be the missing 10 year olds are seen in a sports centre car park in Soham, Cambridgeshire.

Caught on camera at 18:13:31: The girls cross the sports centre car park

Twenty-nine seconds later they are at the main building by a row of parked cars. Police want to trace the owners

Close up: Holly and Jessica were wearing their Manchester United tops when they went missing

Seconds later, another snapshot as the girls continue their Sunday evening stroll

Two minutes nine seconds later, a group of people return to their car. Police were later able to trace them

Sunday 4th August, 18:18:54. Is this you driving away from the sports centre?

Cameras at the Ross Peers sports centre caught the girls on film

Police have issued a dedicated telephone hotline for the public to call on 01480 422982.