Police are searching for two girls described as vulnerable who went missing from a mental health hospital in East Sussex.
Sophie McCarron, 13, from Folkestone, Kent, and 16-year-old Eva Sloka, from Westcliffe in Southend, Essex, were both voluntary patients of The Priory Hospital in Ticehurst.
They went missing together on October 26, said a Sussex Police spokesman.
Detective Sergeant Gavin Patch, from Bexhill CID, said: "Sophie is a vulnerable teenager who has mental health issues and is in need of medication.
"Eva is being treated as vulnerable by Essex Police due to her age and absence from home. I have made extensive inquiries and believe they were seen together in Southend the day after they disappeared.
"I am liaising with colleagues in Essex and Kent as I believe the two of them are travelling in the South East using public transport.
"My concern has increased for both of the girls because of the length of time they have been missing and their vulnerability."
He said that Sophie is white and about 5ft 6in with straight brown hair and was wearing green combat trousers, a dark hoody, black dolly shoes and a woolly hat when she went missing.
Eva is described as white with untidy shoulder length orange hair, 5ft 7in, with pale complexion and brown eyes. Det Sgt Patch added: "We believe she now has a piercing below her bottom lip and may be wearing a Superman hat. At the time of her disappearance she was wearing a long black cardigan, cream boots and tracksuit bottoms."
Anyone who may see the girls has been asked to contact police on 0845 60 70 999, quoting serial 1528 of 26 October, or Crimestoppers anonymously on 0800 555 111.