Forensic experts in Argentina have identified the body of a young activist, Santiago Maldonado, who had been missing since 1 August.He disappeared after a confrontation with police at an indigenous rights protest in Patagonia. His body was found in a nearby river on Tuesday. The authorities said he drowned and there was no sign of violence. Maldonado's disappearance has become highly politicised ahead of Sunday's congressional elections. The opposition blamed security agents for his death and accused the government of Mauricio Macri of covering up the crime... His brother recognised the body after seeing his tattoos on Friday. Later on Friday, Judge Gustavo Lleral confirmed as he left the morgue that the body was that of the 28-year-old activist. Maldonado was last seen after he was arrested at a demonstration for the rights of the Mapuche indigenous group in southern Argentina on 1 August... Human rights campaigners, union leaders and left-wing groups had called on President Macri's government, which has denied allegations of a cover-up, to do more to find him... Justice Minister Germán Garavano claimed the result of the autopsy should lay to rest some of the accusations levelled at the government by activists.