Australia's ambassador in Myanmar has spoken with Sean Turnell, the detained economics adviser to deposed leader Aung San Suu Kyi, Foreign Minister Marise Payne says.
"Our ambassador and Professor Turnell discussed his health, welfare and the conditions in which he is being detained," Senator Payne said in a statement to Reuters on Thursday.
Prof Turnell, of Sydney's Macquarie University, is director of the Myanmar Development Institute in Naypyitaw and has served as a consultant to Ms Suu Kyi since December.
Prof Turnell said on Saturday he was being detained, in the first known arrest of a foreign citizen since the February 1 military coup.
Senator Payne has said that Australia is working hard to secure his release.
Prof Turnell's wife Ha Vus said he had done nothing wrong.
"We all know that wherever he is now he will be worried," she posted to social media.
"He worked for Myanmar by using his knowledge of economic from 20 years. He is someone who brings job opportunities and jobs to Myanmar people."
Waning Patience
Myanmar's ruling general has signalled waning patience with nationwide protests over the military's takeover, ordering demonstrators to return to work or face "effective actions".
His warning comes after a sixth consecutive day of anti-coup rallies condemning the ouster of civilian leader Ms Suu Kyi, and follows US President Joe Biden announcing sanctions against the generals.
While the demonstrations have largely been peaceful, security forces earlier this week used tear gas, water cannon and rubber bullets on protesters, with isolated reports of live rounds being fired.
By late Thursday, army chief General Min Aung Hlaing, who now holds legislative, judicial and executive powers, called for civil servants to return to work after days of nationwide strikes supporting the protests.
Police use water-cannon to disperse demonstrators during a protest in Mandalay, Myanmar. Source: AAP
"Due to unscrupulous persons' incitement, some civil service personnel have failed to perform their duties," he said in a statement.
"Effective actions will be taken."
Since the 1 February coup, there has been an outpouring of anger and defiance, calling for the release of Ms Suu Kyi and other detained senior figures of her National League for Democracy party.
Demonstrators again marched peacefully on Thursday in Naypyidaw, the capital and military stronghold, as well as Yangon, the largest city and commercial hub, which saw tens of thousands flood into the streets.
"Don't go to the office," chanted a group of protesters outside Myanmar's central bank in Yangon, part of the effort urging people to boycott work and put pressure on the junta.
"We aren't doing this for a week or a month, we are determined to do this until the end when (Suu Kyi) and President U Win Myint are released," one protesting bank employee told AFP.
Joining the protest were dozens from the ethnic Karen, Rakhine and Kachin communities, drawn from Myanmar's roughly 130 ethnic groups, some of whom have faced intense persecution from the army.
"Our ethnic armed groups and ethnic people have to join together to fight against the military dictatorship," Saw Z Net, an ethnic Karen protester, told AFP.
In Shan state, demonstrators in traditional costumes took their anti-coup message to the water on Lake Inle, with similar scenes unfolding in the ancient UNESCO heritage city of Bagan as hundreds marched between temples and pagodas.
US sanctions
Western nations have repeatedly denounced the coup, with the United States leading calls for the generals to relinquish power.
In the most significant concrete action, Mr Biden announced his administration was cutting off the generals' access to $1 billion (AUD $1.29 billion) in funds in the United States.
The Australian government is yet to commit to specific action against the military regime beyond expressing its deep concern and promising to review military and aid ties.
On Thursday, the US Treasury Department said it was blocking any US assets and transactions with 10 current or former military officials held responsible for the coup.
Targets include general Hlaing, already under US sanctions over the campaign against the mostly Muslim Rohingya minority, as well as military leaders in the new cabinet such as Defense Minister General Mya Tun Oo.
Washington threatened further sanctions if the military does not leave, and if there is more violence against demonstrators.
"I again call on the Burmese military to immediately release democratic political leaders and activists," Mr Biden said Wednesday, using Myanmar's former name.
Myanmar Protests Continue, Despite Warnings of a Military Crackdown. Source: The New York Times
"The military must relinquish power."
Former colonial power Britain welcomed Mr Biden's steps, with foreign secretary Dominic Raab tweeting that "we will hold those responsible to account".
European Union foreign policy chief Josep Borrell has also warned the bloc could impose fresh sanctions on Myanmar's military.
Crackdown deepens
There were more reports of arrests Thursday, including the deputy speaker of the parliament's lower house and a key aide to Ms Suu Kyi.
The number of coup-linked detentions is now more than 200, according to monitor Assistance Association for Political Prisoners.
The NLD, whose Yangon headquarters saw a raid this week, also confirmed the arrest of election officials in the afternoon.
The military justified last week's power grab by claiming widespread voter fraud in November's polls, which saw a landslide for Ms Suu Kyi's party.
It quickly moved to stack courts and political offices with loyalists as it ended a decade of civilian rule.
Fears are growing over how long the junta will tolerate the protests.
Live rounds were fired at a rally in Naypyidaw this week, critically wounding two people, including a woman who was shot in the head.
Images depicting the woman have been shared widely online alongside expressions of grief and fury.
The military's clampdown on information using internet blackouts, with tech companies ordered to cut communications intermittently, has drawn widespread condemnation.
Concern grew Thursday that the junta was planning to impose a much harsher and sustained internet crackdown, including enacting a draft cybersecurity bill that would allow the military to order blackouts and website bans.
A coalition of the world's largest internet companies, including Facebook, Google and Twitter, denounced the draft law Thursday, calling it "a regressive step" to the past.
"We urge the military leaders to consider the potentially devastating consequences of these proposed laws on Myanmar’s people and economy," said Asia Internet Coalition's managing director Jeff Paine.
