ATHENS (REUTERS) - Greece's coast guard continued to search for four missing migrants off the island of Mykonos on Sunday (June 19), after rescuing another 108 migrants on a sailboat that sent a distress signal late on Saturday, officials said.

A coast guard vessel located the sailboat about 1.8 nautical miles south-east of Delos, a small island near Mykonos. The sailboat was taking in water and was towed safely to a Mykonos port.

Mykonos is a popular island in the Aegean sea known for its vibrant nightlife.

The nationality of the 108 rescued migrants, among them 24 women and 21 children, had not yet been determined, coast guard officials said. None wore life vests.

"Once more, Greece's coast guard saved lives that ruthless migrant trafficker rings expose to fatal danger without any protection measures," said Greek Shipping Minister Yannis Plakiotakis.

Greece is the main route into the European Union (EU) for asylum-seekers arriving from Turkey. The number of arrivals has fallen sharply since 2016 after the EU and Ankara agreed to a deal to stop migrants from crossing into Greece.