There have been investigations done by the Special Rapporteur of the UN Human Rights Council linking the government—the military, precisely—to the extrajudicial killings.
Elements and units have been identified that were responsible for the killings. Using this operational plan, this counter-insurgency plan, that targets organizations and groups that are critical of the government, they have perpetrated these kinds of violations.
The new president, by the way, before he sat down on July 1, met with representatives of the European Union, ambassadors and consuls. He promised to take a look at the extrajudicial killing and bring people who are responsible to justice. About two years have passed and nothing has been done about it.