Ethiopia’s Human Rights Commission (EHRC) has said it is “alarmed” by the public parading and execution of a suspected criminal in Dembi Dollo city in the western Oromia region.
It added that it condemned the incident in the “strongest terms”.
A short clip uploaded online showed a man, with clothes stained with blood and mud, chained to a fence. He later died.
The EHRC identified the man as Amanuel Wondimu.
The authorities said he was a member of the banned Oromo Liberation Army, which was recently designated as a terror group.
He was reportedly behind the killing of a journalist, who worked for the state media, two days ago.
An eyewitness told the BBC that Mr Wondimu was executed by security forces in the city’s square. While the authorities confirmed the killing, they denied it was done in public.
The EHRC urged the authorities to immediately investigate the incident.
This is yet another sign of the deteriorating security situation in Ethiopia ahead of crucial national polls, set to take place in less than four weeks.