The United Nations on Sunday condemned Myanmar's new military regime following the death of two anti-coup protesters. Mourners on the same day prepared for the funeral of a young woman who became a national symbol of resistance to the junta.

Saturday's firing is among the new tactics that authorities have geared up with against a massive and largely peaceful civil disobedience campaign demanding the return of ousted civilian leader Aung San Suu Kyi, reported AFP.

Condemning  the use of "deadly violence" in the melee, which emergency workers said had killed one teenager and wounded dozens more, UN Secretary General Antonio Guterres said, "The use of lethal force, intimidation & harassment against peaceful demonstrators is unacceptable."

Mandalay's confrontation began when security forces  attempted to raid a shipyard and detain port staff on strike to protest the army takeover.

According to medical rescue workers, the troops used live rounds, rubber bullets and tear gas against a crowd of people who had started flinging rocks in an effort to stop the arrests. Two emergency workers confirmed the death of two people. 

Graphic video circulated on Facebook showing a teenaged victim, splayed on the ground and bleeding from his head as a bystander placed a hand on his chest to feel for a heartbeat.

A resident said, "They beat and shot my husband and others. He was standing on the side and watching the protest but the soldiers took him away."