Rabat, June 24 -- Italian security services have arrested seven people suspected of smuggling more than 80 irregular migrants in the Mediterranean sea.

The European Union's border force, Frontex, released a video captured by a surveillance plane showing a fishing boat transferring a group of migrants to a smaller vessel in the Mediterranean sea.

Frontex posted several tweets with the footage during the operation "Wait, wait. Why is that fishing trawler towing an empty wooden boat at high seas?"

Frontex added that its plane and drone "kept observing the fishing trawler and the boat with migrants over several hours, alerting Italian and Maltese authorities."

The agency added that the operation was "clearly the case of a 'mother boat' us...