A man from Doncaster has been jailed for eight years after admitting a series of child sex offences.
Jason Armstrong, 51, of Moorends, Doncaster, pleaded guilty to 21 charges including sexual activity with a child, meeting a child following sexual grooming, and making and distributing indecent images of children.
He was sentenced this week after appearing at Sheffield Crown Court via video link from prison.
Armstrong, who is originally from Norfolk, committed offences against seven victims who were aged between 15 and 17.
His offending took place all over the country including in North and West Yorkshire. His offending is not believed to have covered the South Yorkshire area.
South Yorkshire Police were alerted to reports that Armstrong was using fake social media profiles to befriend girls in 2016.
Officers searched his home and found several mobile phones and electrical items he used to contact and arrange meetings with victims.