As the ruling generals pressed on with a drive to stymie nationwide opposition, Myanmar's giant neighbour India called in a joint statement along with the United States, Japan and Australia -- all members of the so-called "Quad" alliance -- for strengthening democracy in Asia and reversing the coup.

India said that External Affairs Minister Subrahmanyam Jaishankar emphasized "upholding of rule of law and the democratic transition" in Myanmar.

The February 1 putsch -- which saw Suu Kyi and President Win Myint detained in dawn raids under the blanket of an internet blackout -- has drawn international condemnation.

Washington was the first to enact concrete action, announcing targeted sanctions last week against Myanmar's generals by cutting off their access to $1 billion in funds in the United States.

Former colonial power Britain said Thursday that three generals -- Defence Minister Mya Tun Oo, Home Affairs Minister Soe Htut and his deputy Than Hlaing -- will be sanctioned for "serious human rights violations" following the coup.

Canada in turn sanctioned nine Myanmar military officials and accused the junta of engaging "in a systemic campaign of repression through coercive legislative measures and use of force".

Army chief General Min Aung Hlaing -- who now holds legislative, executive and judicial powers -- is already sanctioned by Britain, Canada and the United States for his military's role in a brutal crackdown on the Rohingya Muslims in 2017.

- Hackers against the coup -

A torrent of anger and defiance has surged in Myanmar among young and old -- many of whom remember the brutal 49 years under military rule before the generals loosened their grip on power in 2011.

But after a decade-long flirtation with democracy, the military has justified seizing power by alleging widespread voter fraud in November elections, which Suu Kyi's party won in a landslide.

The regime has since imposed multiple internet shutdowns and blocked social media platforms in an attempt to stifle dissent.

In retaliation, hackers targeted Myanmar government websites on Thursday, disrupting the Central Bank, the military's propaganda page, and state-run broadcaster MRTV, among others.

"We are fighting for justice in Myanmar," the hacker group said on its Facebook page.

The impact of the hacks "will be potentially limited but what they are doing is raising awareness," cybersecurity expert Matt Warren from Australia's RMIT University told AFP.

Internet access was severely curtailed for the fourth night running, according to NetBlocks, a Britain-based group that monitors internet outages around the world.

- Tensions nationwide -

For nearly two weeks hundreds of thousands of demonstrators have marched nationwide demanding Suu Kyi's release and a return to democracy.

From the remote northern Kachin state to southern coastal city of Dawei, the anti-coup movement has united disparate strands of society -- garment workers, public servants, engineers, air control workers and teachers.

Fears of an impending crackdown have heightened in recent days, as armoured vehicles were seen Sunday around commercial hub Yangon and an increased presence of troops across the country.

For the second day running motorists in Yangon blocked roads with vehicles they claimed were "broken" to stop security forces from moving around Myanmar's biggest city.

Thousands crowded key junctions, flashing a three-finger salute at the police and urged them to join "the civil disobedience movement."

Tension was high in the northern city of Myitkyina, where thousands marched under the watchful gaze of truckloads of soldiers, local media reported.

The massive show of force comes days after Myitkyina police fired tear gas and shot into a crowd of protesters late Sunday.

In Myanmar's capital Naypyidaw, police used water cannons against protesters, spraying nearby homes and storefronts.

Eleven foreign ministry officials were arrested for taking part in the anti-coup movement, multiple sources told AFP.

Soe Thu Aung told AFP that he spoke with his partner Khin Mar Aung, a ministry worker, until midnight Wednesday -- then received a text message at 4:30 am Thursday saying that police were coming to arrest her.

"We don't know where they are now," Soe Thu Aung told AFP.

Since the coup, more than 520 people have been arrested, according to the Assistance Association for Political Prisoners.

There have been isolated reports of live rounds used, with one woman in critical condition after being shot in the head last week in Naypyidaw.

The military said a police officer died in Mandalay after a confrontation with protesters on Sunday.