The Palace of Justice siege was a 1985 attack on the Supreme Court of Colombia, in which members of the leftist M-19 guerrilla group took over the Palace of Justice in Bogotá, Colombia, and held the Supreme Court hostage, intending to hold a trial against President Belisario Betancur. The guerrilla group called themselves the “Iván Marino Ospina Company” after an M-19 commander who had been killed by the Colombian military on 28 August 1985. Hours later, after a military raid, the incident left almost half of the 25 Supreme Court Justices dead.