Customs Surveillance officers of the Spanish Tax Agency, together with the National Police and the Guardia Civil, seized 4,380 kilos of hashish from a Spanish-flagged yacht at the Puerto Blanco marina in Calpe, Alicante, in the early hours of 22 July 2020.[1][2] The Tax Agency patrol vessel Arao boarded the yacht at about 4am as it headed for the marina, after air, sea and land units had tracked it through rough seas overnight.[1][2]

Six members of the organisation were arrested: the two crew on board and four people waiting ashore with a large van to unload the cargo of more than 130 bales.[1][2] The joint operation, codenamed Hollín and coordinated through the CITCO intelligence centre, had begun the previous March after investigators in Alicante flagged the yacht and its crew.[1]