From left: Greenpeace International activists Faiza Oulahsen of Netherlands, Dima Litvinov of Sweden, Camila Speziale of Argentina, Phiip Ball of the United Kingdom and Sini Saarela of Finland attend their meeting with residents of St.Petersburg, Russia, Monday, Dec. 23, 2013, with a projection of image of Greenpeace International activist Roman Dolgov of Russia standing in a cage in the background. Russia's parliament last Wednesday passed an amnesty bill that will likely apply to the 30-member crew of a Greenpeace ship detained after an Arctic protest, but it wasn't immediately clear if and when the activists would be allowed to leave the country. PETERSBURG, Russia (AP) - Russian investigators have dropped charges against all but one of the 30 crew of a Greenpeace ship, who were accused of hooliganism following a protest outside a Russian oil rig in the Arctic, the group said Wednesday. Cristian d'Alessandro of Italy failed to get his criminal case closed due to the lack of an interpreter and will have to visit the St.Petersburg branch of Russia's Investigative Committee again on Thursday, said Violetta Ryabko, a Greenpeace spokeswoman. The criminal charges against the crew were closed under an amnesty that was passed by the parliament earlier this month, seen by many as an attempt by the Kremlin to dampen the criticism of Russia's human rights record before the Winter Olympics in Sochi in February. Ryabko said that foreign members of the crew had already applied to the Russian authorities for exit visas to leave Russia and expect to get them in the next few days. The 30 crew members aboard a Greenpeace ship were detained in September and held in custody for two months before they were released on bail in November. They were originally charged with piracy, but that was then downgraded to hooliganism. "That was an extremely odd Christmas morning," Frank Hewetson of Britain was quoted by Grenpeace as saying Wednesday. Peter Willcox, the U.S. captain of the Greenpeace ship Arctic Sunrise, said in a statement released by the group that he was "pleased and relieved the charges have been dropped, but we should not have been charged at all." Russia's President Vladimir Putin has questioned the Greenpeace protesters intentions to protect the Arctic and alleged that they were trying to hurt Russia's economic interests. He said earlier this month that he did not mind that charges against the Greenpeace team were dropped under the amnesty, but that he hoped that "this will not happen again."