Michele was wearing a swimming costume when she went missing (Picture: Lifeline Hellas)

A British woman missing in Greece for four days was warned not to swim out into deep water,it has emerged.

Michele Bourda was last seen on a sunbed on Ofrynio beach in Kavala on Friday,but when her husband on the lounger next to hers woke up from a nap he realised she was missing.

Her clothes and bag were still on the sunbed,and both police and the coast guard have been searching for her since.

Missing person charity LifeLine Hellas issued a silver alert – typically used for missing adults with dementia or Alzheimer’s – saying Michele’s ‘life is in danger’ and asking anyone who had seen her to