It comes as hackers have leaked the personal details of more than 1,000 senior police officers, promising that “no one will remain anonymous, even under a hood,” amid reports of violent crackdowns on protesters.
At least 10 people were arrested on Sunday, according to Russian news agency TASS, which quoted a police spokesperson.
Local media shared videos showing security forces wearing helmets and balaclavas dragging protesters off the streets.
On Saturday, more than 390 women demonstrating in Minsk were arrested, including an elderly woman who has become a symbol of the protests.
The unrest began after the presidential election on August 9, which many Belarusians believe M. Lukashenko, a former Soviet collective farm manager, fraudulently won.
Lukashenko has been President of Belarus for 26 years, during which time he consistently suppressed political opposition.
He has resisted calls to resign, appearing at times carrying an automatic rifle and backed by support from the Russian president. Vladimir Poutine.
A few weeks ago, the European Union promised to impose sanctions on Minsk for allegations of electoral fraud and human rights violations, but it is now expected to miss its deadline of Monday to act.
Thousands of people have been arrested during the protests, many of whom said they were beaten and tortured while in detention – though the government denies the claims.
“As the arrests continue, we will continue to release large-scale data,” the hackers told opposition news channel Nexta.
Details include the names of senior officers, as well as their surnames, surnames – common in Russian-speaking countries – as well as their dates of birth, parental units, ranks and functions.
The government has said it will find and punish anyone responsible for the police data leak, which aired on the popular Telegram chat app on Saturday.
“The forces, means and technologies at the disposal of the internal affairs bodies make it possible to identify and prosecute the overwhelming majority of those responsible for leaking personal data on the Internet”, declared Olga Chemodanova, spokesperson for the Belarusian minister. internal affairs. .
Opposition leader Svetlana Tikhanovskaya praised the women’s march in a video statement from Lithuania, where she fled after being detained at a government election office after the elections.
Speaking to Sky News, Ms Tikhanovskaya said she was not yet ready to talk about what happened to her during the period of detention.
It is believed that she was threatened with separation from her two young children, whom she had already settled in Lithuania.
“They frightened and put pressure on women during the second month, but despite this, Belarusians continue their peaceful protest and show their incredible courage,” Ms. Tikhanovskaya said of Saturday’s march.
The Belarusian government has reacted angrily to reports that Ms Tikhanovskaya may soon meet with EU foreign ministers.
Foreign Ministry spokeswoman Maria Zakharova criticized the EU, accusing Brussels of trying to ‘shake the boat’ in Belarus – seen by Moscow as a strategic buffer against the EU and NATO .
Russia accused the United States of fomenting revolution in Minsk and agreed to provide a loan of $ 1.5 billion (£ 1.16 billion) to support Mr Lukashenko’s government in the following a meeting with Mr. Poutine.
Belarus will spend $ 330 million (£ 255 million) to cover its outstanding debt to Russian gas giant Gazprom, according to Russian Finance Minister Anton Siluanov.