The Maguindanao massacre, also known as the Ampatuan massacre, named after the town where mass graves of victims were found, occurred on the morning of November 23, 2009, in the town of Ampatuan in then-undivided Maguindanao (which is now Maguindanao del Sur) province, on the island of Mindanao. The 58 victims were on their way to file a certificate of candidacy for Esmael Mangudadatu, vice mayor of Buluan, when they were kidnapped and later killed. Mangudadatu was challenging Datu Unsay mayor Andal Ampatuan Jr., son of the incumbent Maguindanao governor Andal Ampatuan Sr. and member of one of Mindanao's leading Muslim political clans, in the forthcoming Maguindanao gubernatorial election, part of the national elections in 2010. The 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. Even before the Maguindanao massacre, the Committee to Protect Journalists had labeled the Philippines the second most dangerous country for journalists, second only to Iraq. The Ampatuans had been in control of Maguindanao since 2001. Andal Ampatuan Sr. first came into prominence when President Corazon Aquino appointed him as Chief-of-Offices of Maganoy (now Shariff Aguak) in 1986 immediately after the People Power Revolution. Aquino, after coming into power in 1986 through a revolution, replaced every locally elected official with officers-in-charge, although the town of Maganoy was approached differently; the aging mayor, Pinagayaw Ampatuan, was replaced by his vice mayor, Andal Ampatuan Sr. He won the 1988 local elections and served for ten years. Andal Sr. was elected governor 1998. Members of Lakas-Kampi-CMD, President Gloria Macapagal Arroyo listed Andal Sr. as a major ally in Mindanao.