Supporters of Myanmar's military have tussled with anti-coup protesters, as turmoil over the ousting of the country's elected government spills onto the streets.
Myanmar has been jolted by unrest since the military seized power in a coup on 1 February.
Since then mass protests have been seen across the country, with many calling for a return to democracy.
More anti-coup protests took place in the main city of Yangon on Thursday.
But before coup opponents had a chance to gather in large numbers, about 1,000 supporters of the military turned up for a rally in the city centre.
By Thursday's afternoon, the rally had descended into violence, as scuffles between military supporters and opponents in parts of the city escalated.
Some of the military supporters involved in the violence were armed with knives, clubs, pipes and catapults used to hurl rocks, witnesses said.
In one incident, several men, one wielding a large knife, attacked a man outside a city-centre hotel, according to Reuters news agency. It said the man's condition was not known.