Authorities urged to disclose details after US President Barack Obama confirms that the unmanned aircraft are used to target suspected militants.
Relatives of hundreds of massacre victims have triumphed in forcing retired General Ríos Montt to appear before a court on genocide charges.
Despite an ongoing investigation, Haiti's former ruler has yet to face justice for widespread human rights violations from the past.
Two students were killed when Mexican police used force to break up a protest blocking a motorway in the south of the country.
Former Panamanian General Manuel Noriega has been extradited back to Panama, but must still face justice for his full role in human rights violations.
For decades, families have sought justice for hundreds victims of a 1981massacre at El Mozote in El Salvador.
Four members of Colombia's security forces have been killed while being held by guerillas, a possible war crime.
Brazil's authorities must address indigenous land claims to prevent future violent attacks on indigenous communities.
Fourteen Mexican soldiers have been given lengthy prison sentences over the killing of civilians at an army checkpoint in 2007.
The Uruguayan government has revoked a controversial 1986 law that shielded officials from prosecution for crimes against humanity.
Decades after Argentina's military dictatorship ended, the latest in a series of trials has brought former officials to justice for crimes against humanity.
An armed ambush that killed a judge near Rio de Janeiro highlights the city's high level of criminality and police corruption.
Guatemalan presidential candidates are urged to commit to protecting and improving human rights ahead of elections in September.
Authorities urged to ensure that when the country's former leader is extradited by France he is tried for human rights abuses during his 1980s rule.
After a TV presenter was shot dead in the Dominican Republic, authorities must do more to protect journalists who face threats.
The family of disappeared priest Michael Woodward are challenging the dropping of murder and torture charges against former officials.
Uruguay finally has a green light to investigate dozens of cases of human rights abuses from its period of military rule three decades ago.
Guatemala's authorities are called on to fully investigate alleged political killings ahead of September's elections.
European countries are pressed to extradite or prosecute Guatemalan former officials over alleged human rights abuses.
Impunity abounds in Aragua, Venezuela, as local police officers are suspected of killing seven members of one family