Police are searching for two teenage girls who have been reported missing since Friday.
It is believed friends Tai Gall, from Menstrie, and Kadi Wilson, from Sauchie, are together and may have travelled to Hamilton.
Police Scotland said Tia left her home in Menstrie at around 3.30pm and said she was going to meet Kadi.
She is thought to have taken a bus to meet the schoolgirl in Sauchie.
Tia is described as white, 5ft 1 in height, of slim build, with long dark hair.
She was wearing a black hooded top, black leggings and white and black Nike Dunk trainers.
Kadi left home around 4.45pm.
She is described as white, 5ft 1 in height, of slim build and has long blond hair.
She was wearing blue jeans, a black hooded top and white Nike trainers with an orange tick motif.
Police Scotland has issued an appeal to the public to help trace the girls.
Constable Ben Prescott, of Alloa Police Station, said: “It is the first time that the girls have been missing overnight and the fact that neither has been in contact with their family or friends since last seen is concerning for their parents and police.
“We have been checking CCTV and with local bus companies in an effort to trace them both, but would appeal to anyone who has seen them, or knows where they may be, to get in touch.
“We’d also ask Tia and Kadi to come home. We all just want to make sure that they are safe and well.”
Details can be provided to officers via 101 quoting incident number 1044 of Friday, September 15.