Greece's Coast Guard officials are reportedly anxious that human traffickers in Turkey are going to step up sending rubber dinghies and other craft full of migrants and refugees to Greek islands.

National Intelligence Service agents are trying to determine if the smuggling rings that Turkey lets operate during an essentially-suspended 2016 swap deal with the European Union are changing patterns.

There's also worry that another flood of refugees from Afghanistan fleeing the deadly takeover of the Taliban will flood Greece and seek asylum, the country already holding some 100,000 refugees and migrants who came from Turkey after fleeing war, strife and economic hardship in their homelands.

Between Aug. 28-30, three vessels – sailing boats and yachts – were left stranded with a total of more than 200 migrants aboard in the Aegean, where five islands near Turkey's coast are holding thousands of refugees and migrants.

Two of the vessels were intercepted near the island of Kythira and the third off Milos, said Kathimerini, which reported that 15 more boats sent from Turkey – which goes unsanctioned by the EU – were able to reach Italy, another destination for refugees and migrants.

Earlier this summer Greece's Shipping Ministry sent a letter to the European Commission to alert the EU of the danger of a shipping accident as Greece wants pressure on Turkey to stop the smugglers from operating.