The Italian coastguard received a tip-off from Turkish police that drugs were aboard the Meryam, a 1,613-deadweight-ton Turkish-flagged cargo vessel.[1] Officers boarded the ship in the Strait of Sicily on Friday 5 June 2015 and found 12 tons of hashish worth approximately 40 million euros.[1] A second account likewise describes a joint operation on 5 June that intercepted the Turkish ship with 12 tons of hashish valued at 40 million euros.[2]

Italy planned the operation jointly with Turkish, French, Egyptian, Spanish and Moroccan law enforcement and Europol.[1] Turkish authorities tipped off the coastguard, and troops intercepted the Meryam, which was sailing from a Moroccan port, in the strait that separates Italy from Tunisia.[2] The ten Turkish mariners aboard were arrested and the ship was brought to Palermo, where the crew were held.[1][2]