The UN collects testimony about abuses during the protests in Chile

At least 20 people were killed during riots in connection with the protests, most during the weekend of October 18-20 and the beginning of the following week.

Thousands of people still demonstrate every day, but the level of violence has dropped significantly.

On Friday, investigators shared hundreds of testimonies of eye injuries, broken bones and other serious injuries caused by police rubber bullets and tear gas containers, reports the AP news agency.

"We are sure that the police have not followed their own instructions on the use of force," said Enrique Morales, human rights manager at the Colegio Médico medical organization.

According to Morales, more than 140 people have been treated for eye damage solely by doctors affiliated with Colegio Médico.

Previously, the Institute for Human Rights (INDH) has listed 1,574 people who were taken to hospitals after being injured during the protests, including hundreds with gunshot wounds.

The institute has initiated legal proceedings against the state in nearly 200 cases, including suspected murders and sexual assaults.

The protests were initially aimed at an increase in public transport charges, but were later extended to the Constitution and economic policy in general. Most have been peaceful, but looting and assassinations have occurred, which the government responded to with the state of emergency and military on the streets.

The protests have so far reached their height on October 25, when around one million people demonstrated in the capital Santiago - the largest manifestation after the fall of the military dictatorship in 1990.

The UN investigation has been initiated by UN High Commissioner for Human Rights, Michelle Bachelet, who was also President of Chile. Work will continue until November 22.