Police have appealed for information on the whereabouts of a 14-year-old girl from Doncaster who they think has disappeared with an older man.
Lorna Vickerage is thought to be with John Bush, 35, also from the South Yorkshire town.
A police spokesman said: "Lorna and John are thought to have been in the Highfields area over the last two days," adding that they are also often in the Askern, Adwick and Woodlands areas.
He continued: "Lorna was last seen at 2.30pm on Monday June 10 at Outwood Academy in Adwick wearing her school uniform but it is unlikely that she will still be wearing this."
Her mother Christine Vickerage, 36, posted on Facebook: "Please come home, my gorgeous girl. Am so worried about you. I love you so much.
"Come home, my baby girl - I am so worried. Please just ring me. We all love you so much. (If) anyone has any idea where she could be, would you please contact me - I just want her home safe."
Miss Vickerage is described as white, slim build, about 5'4", with long straight, thick blonde hair, while Mr Bush is described as white, stocky build with receding dark blonde hair.
Speaking at a press conference at Doncaster Police Station this morning, Detective Chief Inspector Craig Robinson of South Yorkshire Police said: "The last positive sighting of Lorna was with John Bush, and that was at 10.15 yesterday morning in the Highfields area of Doncaster.
"At that time she was introduced to a local couple by John as his daughter. Lorna appeared to be safe and well and chatty."
Mr Robinson described Lorna as "quite vulnerable" and said she was in the care of the local authority and put in foster care on Friday.
Mr Robinson said: "Lorna, you're not in trouble. Your mum's petrified, she's worried to death, we're concerned for your safety. We don't know why you've gone with John and we don't know why John's taken you.
"Let us know you're safe and well. Speak to John - tell him to hand himself in, and if you're listening, John, we really do need to speak to you. The sooner you get this over with, the better."
Anyone with any information can call South Yorkshire Police on 101 quoting incident 609 of June 10, 2013.