Defence chiefs from a dozen countries on Sunday jointly condemned the bloodbath in Myanmar a day earlier, when at least 107 people — including seven children — were killed as security forces opened fire on anti-coup protesters.

Myanmar has been in turmoil since the military ousted and detained civilian leader Aung San Suu Kyi on February 1, triggering mass protests demanding a return to democracy.

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The junta on Saturday staged a major show of might for its annual Armed Forces Day as the death toll from crackdowns since the coup climbed to at least 423, according to a local monitoring group.

The defence chiefs of 12 countries including the United States, Britain, Japan and Australia condemned the Myanmar military’s use of lethal force against civilians.

“A professional military follows international standards for conduct and is responsible for protecting — not harming — the people it serves,” the rare joint statement said.

“We urge the Myanmar Armed Forces to cease violence and work to restore respect and credibility with the people of Myanmar that it has lost through its actions.”

Funerals were held Sunday for some of the victims, after the bloodiest day since the putsch.

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In Mandalay, the family of Aye Ko, a father-of-four, commemorated his life at a service after he was killed overnight.

“I am very saddened to lose my husband — together with my children I’m heartbroken,” his wife Ma Khaing told AFP.

Relatives of 13-year-old boy Sai Waiyan, who was shot Saturday playing outside his house in Yangon, cried over his casket on Sunday afternoon, local media reported.

Despite the dangers, protesters hit the streets again Sunday in parts of Yangon including Hlaing, and in the cities of Dawei, Bago, Myingyan and Monywa.

“One girl was shot in the head and died at the hospital, meanwhile two guys were shot dead on the spot,” a rescue worker from Monywa told AFP.

There was also a death in Myingyan — one woman was killed and two others injured, a medic said.

At Hlaing, a 16-year-old boy lost a hand in a blast, trying to throw back a grenade that security forces had lobbed at protesters, a rescue worker said.

A day earlier there were brutal military crackdowns at more than 40 locations across the country. The Mandalay and Yangon regions saw the majority of deaths, according to the Assistance Association for Political Prisoners (AAPP).

The United Nations put Saturday’s death toll at 107 people — including seven children — but expects it to rise further.

“The shameful, cowardly, brutal actions of the military and police — who have been filmed shooting at protesters as they flee, and who have not even spared young children — must be halted immediately,” United Nations envoys Alice Wairimu Nderitu and Michelle Bachelet said in a joint statement.

Rebels in eastern Myanmar’s Karen state said they had been targeted in air strikes late Saturday, hours after the ethnic armed group seized a military base.

Hsa Moo, an ethnic Karen and human rights activist, said three people were killed and at least eight injured.

It was the first air assault in 20 years in the state, and targeted the Fifth Brigade of the Karen National Union (KNU) — one of the country’s largest armed groups — which says it represents the ethnic Karen people.

Further air strikes on Sunday sent 2,000 people from two villages in Karen state darting through the jungle across the border into Thailand seeking safety, Hsa Moo told AFP.

There was a grand parade of troops and military vehicles in the capital Naypyidaw on Saturday where junta leader General Min Aung Hlaing defended the coup and pledged to yield power after new elections.

But he also issued a threat to the anti-coup movement, warning that acts of “terrorism which can be harmful to state tranquillity and security” were unacceptable.

On Saturday night Min Aung Hlaing and his wife entertained dignitaries including Russian deputy defence minister Alexander Fomin at a lavish outdoor dinner in Naypyidaw.

State-run newspaper the Mirror reported there were musical performances and a drone display featuring a representation of Min Aung Hlaing saluting.

Armed Forces Day commemorates the start of local resistance to the Japanese occupation during World War II, and usually features a parade attended by foreign military officers and diplomats.

Overnight, at the Miss Grand International beauty pageant in Bangkok, a tearful Myanmar contender, Han Lay, pleaded for peace.

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“I deeply feel sorry for all the people who have lost their lives on the streets,” she said in an emotional address, before singing Michael Jackson’s “Heal the World”.

“Please help Myanmar, we need your urgent international help right now.”