A joint operation with Greece's intelligence service has led to the Coast Guard discovering a new illegal migration route from Turkey to the southern island of Crete, officials said Thursday.

A total of 50 undocumented migrants were rescued off southern Crete on Wednesday, authorities said.

The Greek Coast Guard and the European border control agency Frontex carried out four search-and-rescue operations within hours on Thursday morning, south of Crete and Gavdos.

A joint operation with Greece's intelligence service has led to the Coast Guard discovering a new illegal migration route from Turkey to the southern island of Crete, officials…