The disappearance of a 14-year-old girl in Sheffield has left police baffled, with officers admitting they do not know why she has gone missing.
Adela Copakova disappeared in Sheffield on Sunday evening and was last seen outside a house in Twentywell Lane in the city at about 8pm.
Police said they have yet to find a reason why Adela has gone missing as inquiries have indicated that she was happy.
A South Yorkshire Police spokesman said Adela has a number of friends in Sheffield, including some in the Page Hall area, and officers have made numerous inquiries over the last two days in an attempt to trace her.
Superintendent Colin McFarlane said: "The inquiries we have made to date have failed to explain why Adela would have just suddenly disappeared and we are concerned to find her as soon as possible.
"Having spoken to those with whom she has been in recent contact, it appears that she was happy and gave no indication that anything was troubling her.
"I would urge people to look out for her and to let us know as soon as possible if they see her, or think they may know where she may be."
Adela is Slovakian and was last seen wearing brown leopard print trousers with a white vest and a white lace blouse over the top. She was also wearing large gold hooped earrings.
She is 5ft 4in and of slim build, with long, dark brown hair.
Anyone who knows where Adela is, or where she may be, is asked to contact the police on 101 quoting Missing Person Reference KX/2472/2013.