- United States -

The United States "will take action against those responsible if these steps are not reversed", White House spokeswoman Jen Psaki said in a statement.

She added that the US opposes any attempt to alter the outcome of the November elections, which handed Suu Kyi's National League for Democracy (NLD) an overwhelming landslide, but sparked allegations of vote irregularities by the routed military-backed party.

Newly appointed US Secretary of State Antony Blinken also called on Myanmar's military "to release all government officials and civil society leaders and respect the will of the people of Burma as expressed in democratic elections on November 8."

Before the coup, Washington, alongside several other Western nations, had urged the military to "adhere to democractic norms" in a January 29 statement that came as the commander-in-chief threatened to revoke the country's constitution.

- Australia -

"We call on the military to respect the rule of law, to resolve disputes through lawful mechanisms and to release immediately all civilian leaders and others who have been detained unlawfully," Australian Foreign Minister Marise Payne said.

- India -

"We have noted the developments in Myanmar with deep concern. India has always been steadfast in its support to the process of democratic transition in Myanmar. We believe that the rule of law and the democratic process must be upheld," India's Ministry of External Affairs said in a statement.

- United Nations -

UN Secretary-General Antonio Guterres "strongly" condemned the military's detention of Suu Kyi, President Win Myint and other leaders.

"These developments represent a serious blow to democratic reforms in Myanmar," spokesman Stephane Dujarric said in a statement.

- Singapore -

Singapore's Ministry of Foreign Affairs expressed "grave concern about the latest situation in Myanmar," adding hopes that all parties would "exercise restraint."

The city-state advised Singaporeans in Myanmar to stay vigilant "in view of the fluid situation."

- Canada -

Bob Rae, Canada's ambassador to the United Nations, tweeted that Myanmar's military "wrote the Constitution this way so they could do this."

"The Constitution of 2008 was specifically designed to ensure military power was deeply entrenched and protected," he said.