Singapore/Jakarta: Four Indonesian military officers have been arrested in connection with a chemical attack on a young Indonesian activist who had long been critical of the country’s security forces and had investigated their conduct during last year’s deadly nationwide protests. Shocking CCTV footage and sound of the attack, verified by Indonesian police, shows Andrie Yunus, 27, screaming in agony and ripping off his clothes on a busy Central Jakarta street on the night of March 12 as confused bystanders rush to his aid. Moments earlier, he had been riding his motorbike home after recording a podcast about the Indonesian military’s ballooning role in civilian affairs, when two riders travelling in the opposite direction passed within centimetres and flung liquid at him. Yunus, an activist with the Commission for the Disappeared and Victims of Violence (KontraS), remains in a high care unit in hospital with eye damage and burns to more than 20 per cent of his body.…