The Maguindanao massacre, also known as the Ampatuan massacre after the town where the mass graves were found, occurred on the morning of November 23, 2009, in the town of Ampatuan in Maguindanao province, on the island of Mindanao in the Philippines. While the victims were on their way to file a certificate of candidacy for Esmael Mangudadatu, vice mayor of Buluan town, they were kidnapped and brutally killed. Mangudadatu was challenging Datu Unsay mayor Andal Ampatuan, Jr., son of the incumbent Maguindanao governor Andal Ampatuan, Sr., in the forthcoming Maguindanao governatorial election, part of the national elections in 2010. The 58 people killed included Mangudadatu's wife, his two sisters, journalists, lawyers, aides, and motorists who were witnesses or were mistakenly identified as part of the convoy. The Committee to Protect Journalists (CPJ) has called the Maguindanao massacre the single deadliest event for journalists in history. At least 34 journalists are known to have died in the massacre. In a statement, CPJ executive director Joel Simon noted that the killings, "appears to be single deadliest event for the press since 1992, when CPJ began keeping detailed records on journalist deaths." The CPJ further noted that, "Even as we tally the dead in this horrific massacre, our initial research indicates that this is the deadliest single attack on the press ever documented by CPJ." Even before the Maguindanao massacre, the CPJ had labeled the Philippines the second most dangerous country for journalists, second only to Iraq.