The Ethiopian authorities have charged the four people accused of killing popular musician Hachalu Hundeasa with terrorism, the Reuters news agency reports, quoting a spokesman for the attorney general.
Hachalu’s death in late June led to a wave of protests during which more than 150 people died.
Thousands have been arrested in relation to the trouble, including politician and former media mogul Jawar Mohammed, who himself has been charged with terrorism.
Reuters quotes the Ethiopian Broadcasting Corporation as saying that the suspects who are accused of killing Hachalu are believed to have been colluding with others to kill several prominent people.