On September 5, activist Olga Kovalkova became the latest to say she had taken refuge in neighboring Poland amid threats of imprisonment.
President Lukashenko, in power since 1994, has accused Western nations of interfering.
Protesters, human rights activists and observers say riot police are brutally suppressing peaceful marches in the former Soviet republic.
Belarus borders Russia, on which it depends heavily for energy and with which it historically has close ties, as well as Ukraine and EU states.
After the Viasna non-governmental organization reported 130 arrests on September 6, the Belarusian interior ministry confirmed for Russian news agency Interfax at least 100 detentions across the republic.
Eyewitnesses told Interfax that police began to make arrests in Minsk after the unsanctioned rally ended and people were going home. Video footage on September 7 shows men in plain clothes beating peaceful protesters with batons.
Internal Affairs Minister Yuri Karayev defended the actions of the security forces.
“They talk about the brutality of the Belarusian police, and I want to say this: there are no more humane, restrained and cool-headed police anywhere in the world,” he was quoted as saying by the official Belta news agency.
September 6 has become the key day for street demonstrations since the rallies began.
In recent days the security forces – dressed all in black with balaclavas over their faces – targeted university students as they returned from their holidays, dragging some from the streets and university buildings into unmarked minivans.
Protests have also been reported in other Belarusian cities and towns including Mogilev, Grodno, and Gomel.
State TV released a video showing President Lukashenko arriving at the presidential palace by helicopter, wearing a flak jacket and carrying an automatic weapon.
Similar demonstrations were held in other Belarusian cities. Meanwhile in Lithuania, thousands of people – including President Gitanas Nausėda – formed a human chain from the capital Vilnius to the Belarusian border in solidarity with those protesting in Minsk.
More human chains were planned in the Estonian capital Tallinn and in Prague in the Czech Republic.
This weekend’s rally in Minsk follows the country’s biggest protest in modern history on August 16, when hundreds of thousands filled the streets. Strike action in key factories across Belarus is also keeping up the pressure on the president.
President Lukashenko insists he won the election fairly and has ruled holding another poll. On August 22 he accused NATO of “trying to topple the authorities” and install a new president in Minsk.
He said he was moving troops to Belarus’s western borders to counter a NATO build-up in Poland and Lithuania, and vowed to “defend the territorial integrity of our country”.
NATO responded by saying it posed “no threat to Belarus or any other country”, and had “no military build-up in the region”.
Alexander Lukashenko has also accused an opposition council – set up by Svetlana Tikhanovskaya to organize peaceful transition – of trying to seize power. Two of its members were questioned by police on August 21.
Belarusian President Alexander Lukashenko announces he has given orders to end the unrest in the capital Minsk triggered by disputed elections.
The official result gave him 80% of the vote but the opposition has denounced the poll as fraudulent.
The move signaled an escalation just as EU leaders agreed to impose sanctions at a virtual summit.
The President of the European Council, Charles Michel, made clear that the EU did not recognize the result of the election and called on President Lukashenko to release hundreds of protesters who have been imprisoned.
On August 19 Wednesday, President Lukashenko approved a cabinet that would see Roman Golovchenko retain his role as prime minister, with many other key members of the previous government reappointed, the Tut.by news network reported.
Among those on the list to remain in place was Interior Minister Yuri Karayev, whose responsibilities include policing and public security.
The proposed government is subject to further consent by the lower house of parliament.
Alexander Lukashekno, who has led Belarus since 1994, said he had ordered police to quell protests in Minsk.
“There should no longer be any disorder in Minsk of any kind,” he told his security council.
“People are tired. People demand peace and quiet,” he added.
President Lukashenko said he had ordered border controls to be tightened to prevent an influx of “fighters and arms”.
He also warned that workers at state media who had gone on strike in protest at the election and the subsequent crackdown on protests that they would not get their jobs back. Russian replacements have reportedly been brought in.
Alexander Lukashenko also accused those picketing outside factories of harassing workers.
He had earlier accused the opposition of “an attempt to seize power”.
His remarks came shortly after the exiled leader of the opposition, Svetlana Tikhanovskaya, had urged EU leaders to reject the election.
Svetlana Tikhanovskaya, 37, who left for Lithuania after being detained for hours following the vote, released a video statement on August 19.
She said President Lukashenko had “lost all legitimacy in the eyes of our nation and the world” and urged the EU to back what she called the “awakening of Belarus”.
Svetlana Tikhanovskaya added: “People who went out to defend their vote in the streets of their cities all across Belarus were brutally beaten, imprisoned and tortured by the regime desperately clinging on to power. This is taking place right now in the middle of Europe.”
She has formed a “co-ordination council” with plans for “new, fair and democratic presidential elections with international supervision”.
After a three-hour video conference, EU Leaders agreed unanimously to take three actions over Belarus.
Firstly, to impose sanctions including asset freezes for an as yet undisclosed number of officials involved in alleged election-rigging, brutality and imprisonment of protesters. The exact sanctions are still being worked out.
Secondly, leaders agreed to a joint form of words making clear that the EU stands with the people on the streets, and does not recognize the result. But it does not go as far as stating they do not recognize President Lukashenko’s authority, as some EU officials wanted.
Thirdly, leaders offered help in trying to mediate dialogue between the government and the opposition, to find a way for the president to stand down and peacefully transfer power.
In addition, €53 million ($63 million) of financial support from the EU to Belarus is being re-assigned away from the state to non-governmental organizations, with some money assigned to help the victims of violence, as well setting up alternatives to government-backed media organizations.
German Chancellor Angela Merkel said Belarus election had been neither free nor fair.
EU leaders, she added, condemned “the brutal violence against demonstrators as well as the imprisonment and use of violence against thousands of Belarusians” which followed in the wake of the disputed election.
Angela Merkel and European Commission President Ursula von der Leyen stressed the need for a dialogue between the authorities and the opposition in Belarus.