The man holds the boy's hand and appears to walk away with the child in the opposite direction

The mother approached the man (left) who then seems to apologise and walk away (right) The mother approached the man (left) who then seems to apologise and walk away (right)
Police are now questioning a man following the incident - which took place on Thursday morning

The Intu Shopping Centre in Derby, where the incident took place yesterday morning

The man approached the child outside this Boots store in the Derby shopping centre