police moved decisively on Saturday in a bid to prevent opponents of military rule gathering after Myanmar's UN envoy urged the
to use "any means necessary" to stop a February 1 coup.
The Southeast Asian country has been in turmoil since the army seized power and detained elected leader
Aung San Suu Kyi
and much of her
, alleging fraud in a November election her party had won in a landslide.
Uncertainty has grown over Suu Kyi's whereabouts, as the independent Myanmar Now website on Friday quoted officials of her National League for Democracy (NLD) party as saying she had been moved this week from house arrest to an undisclosed location.
The coup has brought hundreds of thousands of protesters to Myanmar's streets and drawn condemnation from Western countries, with some imposing limited sanctions.
More protests were planned for Saturday but police were out in force early in the main city of Yangon and elsewhere, deployed in numbers at usual protest sites and detaining people as they began to congregate, witnesses said.
At least two media workers were among those detained in Yangon, witnesses said.
"They also came to arrest me but I escaped and ran away," said another media worker who declined to be identified.
came a day after police broke up protests in Yangon, the second city of Mandalay, Naypyitaw and other towns with rubber bullets, stun grenades and shots into the air. Several people were hurt.
UN General Assembly
, Myanmar's Ambassador Kyaw Moe Tun said he was speaking on behalf of Suu Kyi's government and appealed to the body "to use any means necessary to take action against the Myanmar military and to provide safety and security for the people".
"We need further strongest possible action from the international community to immediately end the military coup, to stop oppressing the innocent people ... and to restore the democracy," he told the 193-member group, receiving applause as he finished.
Kyaw Moe Tun appeared emotional as he read the statement on behalf of a group of elected politicians that he said represented the legitimate government.
Delivering his final words in Burmese, the career diplomat raised the three-finger salute of pro-democracy protesters and announced "our cause will prevail".
Reuters was not immediately able to contact the army for comment.
Opponents of the coup hailed Kyaw Moe Tun as a hero and flooded social media with messages of thanks.
"The people will win and the power-obsessed junta will fall," one protest leader, Ei Thinzar Maung, wrote on Facebook.
U.N. special envoy on Myanmar Christine Schraner Burgener pushed the United Nations for a collective "clear signal in support of democracy", telling the General Assembly no country should recognise or legitimise the junta.
China's envoy did not criticize the coup and said the situation was Myanmar's "internal affairs", saying it supported diplomacy by Southeast Asian countries, which protesters fear could give credibility to the ruling generals.
Singapore said violence against unarmed civilians was inexcusable.
'LOSS OF RIGHTS'
A lawyer acting for Suu Kyi, Khin Maung Zaw, told Reuters he had also heard from NLD officials that she had been moved from her home in the capital, Naypyitaw, but could not confirm it. Authorities did not respond to a request for comment.
The lawyer said he had been given no access to Suu Kyi ahead of her next hearing on Monday, adding: "I'm concerned that there will be a loss of rights to access to justice and access to legal counsel".
Protesters have been demanding the release of Suu Kyi, 75, and recognition of the result of last year's election.
Military chief General Min Aung Hlaing says authorities were using minimal force. Nevertheless, at least three protesters have died. The army says a policeman was also killed.
At least 771 people are under detention or have outstanding charges that have been laid against them since the coup, according to Myanmar's Assistance Association for Political Prisoners.
Suu Kyi, a Nobel Peace laureate and daughter of Myanmar's independence hero, spent nearly 15 years under house arrest under previous juntas. She faces charges of illegally importing six walkie-talkie radios and of violating a natural disaster law by breaching coronavirus protocols.
The army has promised an election but not given a date. It has imposed a one-year state of emergency.
The question of an election is at the centre of a diplomatic effort by the Association of Southeast Asian Nations (ASEAN), of which Myanmar is a member. Indonesia has taken the lead, but coup opponents fear the efforts could legitimise the junta.