Police have asked for youngsters who may have been contacted by an Ilkeston paedophile over the internet to come forward.
Ian May, 39, was jailed at Derby Crown Court for sending messages to a 15-year-old girl, pestering her to expose herself to him.
A police spokesman said: “Officers are now investigating whether May contacted other girls and want anyone who believes they were contacted by him, to get in touch.”
May was jailed for 14 months and must sign the sex offenders’ register for 10 years. He must also obey a sexual offences prevention order, which includes banning him from using the internet to contact any girl under the age of 16.
At the time of his arrest, he was living at a friend’s mother’s house in Chellaston, Derby.
He was of no fixed abode when he appeared in court, but has previous lived in Ilkeston.
Anyone who has information about May having contacted other youngsters should call police on 101.