"The arrest of Aung San Suu Kyi, senior officials and other political figures is extremely alarming," said Ming Yu Hah, Amnesty International's Deputy Regional Director for Campaigns.
Myanmar’s military seized power on Monday in a coup against the democratically elected government of Nobel laureate Aung San Suu Kyi, who was detained along with other leaders of her National League for Democracy (NLD) party in early morning raids.
The army said it had carried out the detentions in response to “election fraud”, handing power to military chief Min Aung Hlaing and imposing a state of emergency for one year, according to a statement on a military-owned television station.
"The United States opposes any attempt to alter the outcome of recent elections or impede Myanmar's democratic transition, and will take action against those responsible if these steps are not reversed," White House spokeswoman Jen Psaki said in a statement, adding that President Joe Biden has been briefed on the situation.
A chase ensured after a lone 26-year-old man aboard refused to stop. He subsequently jumped off the vessel and was arrested, the coastguard said in a statement.