In Mandalay on Saturday, police opened fired and witnesses said at least 20 people were injured while 30 were detained. She had been in critical condition, and on life support, for 10 days.

She has become a symbol of resistance for protesters, who have hoisted her photos high in demonstrations and even unfurled a massive banner of artwork from a bridge showing the moment she was shot.

But she travelled to the protest with her sisters from Yezin, a village north-east of the capital.

The junta says it took power - after detaining national leader Aung San Suu Kyi and preventing Parliament from convening - because elections last November were tainted by voting irregularities.

Tom Andrews, the independent United Nations human rights expert on Myanmar, told The Associated Press this week that the initial restraint of police in dealing with "robust citizen opposition to the coup" has moved in some instances to use of rubber bullets, real ammunition and water cannons.

Flowers and sympathy messages are placed on the ground in honor of Mya Thwate Thwate Khaing during a demonstration in Yangon on 29 February.

"The US will continue to lead the diplomatic efforts to galvanise the worldwide community into collective action against those responsible for this coup", he said.

"I feel that the bullet that hit Mya Thwate Thwate Khaing's head has also hit our heads".

Many countries have urged authorities to avoid violence.

"We condemn any violence against the people of Burma and reiterate our calls on the Burmese military to refrain from violence against peaceful protesters", State Department spokesman Ned Price told reporters, using Myanmar's former name.

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Dr. Wai Phyo Aung of the committee representing elected members of the Union Parliament from the National League for Democracy told The Irrawaddy: "We appreciate that the global community is taking action against the military for its unlawful act".

The military-led National Defense and Security Council meets on Feb.1 following the announcement of the coup.

The US, Britain, Canada and New Zealand have announced limited sanctions, with a focus on military leaders, including banning travel and freezing assets. Numerous videos posted on social media showed muzzle flashes as shots were heard, and some police shot slingshots and threw rocks at the buildings.

The country emerged from its sixth straight overnight internet curfew today, a measure imposed as neighbourhoods around the country began setting up watch groups to guard against evening arrests.

Almost 550 people have been arrested, charged or sentenced since the coup, according to the Assistance Association for Political Prisoners (AAPP), with 500 still behind bars.

Many of these detainees are civil servants who had been boycotting work as part of a civil disobedience campaign.

One teacher who was there - and is now in hiding for fear of arrest - said she saw dozens arrested in the scuffle, including two of her colleagues.

There have also been isolated reports of members of the security forces taking part in nationwide protests.

But by Saturday, the military's information team released a video of the soldier, sergeant clerk Than Lwin, sitting straight-backed against a wall, claiming he was drunk when he joined the protesters.

One of the victims was shot in the head and died at the scene, according to Frontier Myanmar.