An American tourist was fined $1,000 today after cannabis was found in his cruise ship cabin.Gabriel Rivera, 35, pleaded guilty in Magistrates’ Court to one count of possessing cannabis.The court heard that yesterday, Customs officers were carrying out a search of the Norwegian Gem when they entered Rivera’s cabin and a K9 unit indicated towards a red suitcase.Inside the suitcase, officers found a plastic bag containing cigarette materials and six grams of cannabis. Rivera was arrested when he returned to the cabin.Senior Magistrate Archibald Warner fined the tourist $1,000, ordering that the entire amount must be paid today.