Dartmoor Haytor deaths: Police appeal for cyclists
Police investigating the last movements of a mother and son who fell to their deaths on Dartmoor believe they may have been photographed the day before.
Officers are trying to trace a group of cyclists thought to have visited Haytor on the evening of 11 July.
Police believe Katherine Hooper and Joshua Patterson may have slept rough on the moor that night.
The cyclists might have inadvertently taken photographs or footage of the pair, who died on 12 July, they added.
Ms Hooper took a taxi from her home in Paignton to Dartmoor the day before she died, arriving at the tor at about midday on 11 July.
A police spokesman said the cyclists could have been from a local club and were seen resting in the upper car park at about 19:30 BST on 11 July.
Ms Hooper's son Samuel, two, was later found dead at her home in Paignton.
Police believe she may have killed him before leaping to her death from Haytor.
Officers have been at the tor appealing for anyone who saw Ms Hooper and Joshua.
They have released CCTV pictures of Ms Hooper entering the Spar in Kings Ash Road, Paignton, while on her way by taxi to Dartmoor.
Officers have launched two murder investigations into the deaths of the two boys, but said they were not seeking anyone else.