The Masturas were still the strongest rival of the Ampatuans . In the 2010 election , Mastura decided to run as mayor again . In the provincial elections , Esmael Mangudadatu , a vice mayor of the small town of Buluan ran against the Ampatuans , resulting to the gruesome Maguindanao massacre , where 57 people died , including journalists , lawyers and relatives of Mangudadatu while on their way to file his certificate of candidacy . The election-related-violence caught the attention of international media . Mangudadatu asked for the support of Mastura . The Mastura kingmaker , Datu Tucao decided to let Datu Ismael Mastura , his nephew , son of his brother Datu Michael run as the vice governor of Mangudadatu . Tucao declared his support and stayed as the campaign manager . The tandem won the elections
Maguindanao massacre
Maguindanao massacre
Tucao Mastura