Indonesian soldiers accused of acid attack. What happened and why?

The trial of four Indonesian soldiers accused of carrying out an acid attack on activist Andrie Yunus began in a military court in Jakarta. Yunus was attacked on March 12, resulting in blindness in one eye and burns on over 20% of his body. Prosecutors charged the soldiers with premeditated assault, alleging they were motivated by anger over Yunus's activism but were not acting under official orders. The United Nations condemned the attack, calling it a cowardly act of violence.