ATHENS (AFP) - The captain of a US vessel intercepted after it tried to defy a ban and sail for Gaza from Greece was being held in "shocking conditions" Sunday and has not received consular assistance, a lawyer said. Captain John Klusmer was arrested when the US boat Audacity of Hope - the flagship in a flotilla of pro-Palestinian activists - attempted to leave Greek waters on Friday after Athens banned all Gaza-bound ships from setting sail. Klusmer was charged with felony and ordered to appear in court on Tuesday. The US Boat to Gaza organisation said he was being held in jail in "shocking conditions" and as far as it was aware, had not yet received consular assistance. New York lawyer Richard Levy - a passenger on the boat who has visited Klusmer in jail in a port town near Athens - told enraged US activists that "he had no bed or toilet in his cell, and is receiving no food or water".