Finland has called Mexico to conduct "a full investigation" into the killing of a Finnish human rights activist earlier this week, the Finnish Foreign Ministry said Friday, according to dpa. Jyri Jaakkola and a Mexican woman were reported killed when a convoy of indigenous and social rights activists accompanied by international observers was attacked Tuesday in southern Mexico. The Finnish embassy in Mexico has also urged the local authorities to investigate the incident in the state of Oaxaca, 470 kilometres south of Mexico City. The convoy was allegedly ambushed by a rival indigenous group as they entered San Juan Copala, in an area held by the Triqui indigenous community in Oaxaca, according to the Mexican League for the Defence of Human Rights. The group said that at least seven people were also injured. The Finnish statement said "so far, local authorities have not provided information as to which of the armed groups active in the area is responsible for the killing." Finland called for those responsible to be brought to trial. In 2007, San Juan Copala - in a remote area with very difficult access - declared itself an "autonomous municipality," formally refusing to recognize other local authorities. The delegation was carrying food, clothing and blankets for the autonomous village.