Rescuers have pulled four people from the lake since the boat carrying 18 passengers capsized in the afternoon in "strong gales", the local district government said in a statement.
Greece rescues hundreds of migrants in sinking off Crete, recovers four bodies
The disaster has echoes of a far larger disaster last year, where 442 people perished and only 12 survived when a cruise ship in the Yangtze River capsized in a freak storm.
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