Hertfordshire Police investigate after man requests indecent images from teenage schoolgirls
Teenage girls at schools in Harpenden and St Albans have been asked by a man to send him indecent images.
Police they are investigating a 'small number' of cases where pupils have been contacted through social media.
An investigation's underway and safeguarding measures around the girls involved have been carried out.
Police are urging parents to talk to their children about ways to stay safe online.
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