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In page Iván Cepeda:

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In Colombia, Cepeda became involved in the presidential campaign of Bernardo Jaramillo Ossa.[citation needed] Jaramillo Ossa was assassinated in 1990. The same year, Cepeda joined the M-19 Democratic Alliance party, after the former urban guerilla group signed a peace treaty and disarmed.[1] On August 9, 1994, his father, then a Senator, was assassinated in Bogotá by a joint operation between state agents and paramilitary groups.[2][3][4][5][6]