A United Nations human rights team is gathering testimony about hundreds of people allegedly injured by Chile's police during street protests in recent weeks.
The team yesterday heard accounts about ruptured eyeballs, broken bones and other serious injuries inflicted by police pellets or the impact of tear gas canisters.
Interior Minister Gonzalo Blumel has disputed allegations of undue force being used by police.
Authorities have also noted at least 76 police officers have been injured.
At least 20 people have died in the protests, which started last month after the Government announced a hike in subway fares, and expanded to include grievances over education, health services and growing economic inequality.