On September 14, 2005, 14 months after Neptune was first imprisoned, a formal statement of charges against him appeared. He was accused of participating in the "La Scierie Massacre," an alleged attack by Lavalas supporters in the La Scierie neighborhood of St. Marc. Subsequent investigations, including by the United Nations, revealed the massacre to be a struggle between two armed groups, with casualties on both sides. The Haitian Appeals Court prosecutor found that there was no credible evidence of Neptune’s involvement. Lawyers at the Inter-American Commission of Human Rights said that the statement of charges "contain no indication that Mr. Neptune directly perpetrated the crimes alleged against him nor is there a clearly defined connection between Mr. Neptune and those who are alleged to have perpetrated the crimes...The mental and factual elements necessary to establish Mr. Neptune’s responsibility…remain entirely unclear.”