HONG KONG (Reuters) - Fifteen people were wounded on Tuesday after a day of running clashes between police and protesters, with one person in critical condition, Hong Kong’s Hospital Authority said.

The South China Morning Post and television reports said at least one person was wounded in the chest by police firing live rounds. Police did not respond to requests for comment but have said they fired live rounds into the air in previous clashes.

Video footage of a police officer firing at a protester at close range went viral, but there was not immediate verification of its authenticity.