The Baltic states on Monday banned embattled Belarusian President Alexander Lukashenko as he cracked down further on the opposition movement following another huge rally at the weekend.

EU members Estonia, Latvia and Lithuania announced entry bans against Lukashenko and 29 other high-ranking officials, citing human rights violations.

And the White House urged Russia to "respect" its neighbour's sovereignty and democracy and "the right of its own people to elect their own leaders freely and fairly".

Belarus authorities are cracking down further on the opposition after three weekends of mass protests
Belarus authorities are cracking down further on the opposition after three weekends of mass protests TUT.BY / -

Lukashenko has the backing of Russian President Vladimir Putin, who has raised the possibility of sending military support if Belarus "starts to get out of control."

The sanctions from Minsk's ex-Soviet neighbours came after the third weekend of mass protests since the disputed August 9 presidential election. Both Lukashenko and opposition leader Svetlana Tikhanovskaya, who has taken shelter in Lithuania, claimed victory.

"We are sending the message that we need to do more than just issue statements, we must also take concrete action," Lithuania's Foreign Minister Linas Linkevicius told AFP.

Tens of thousands of opposition supporters march through Minsk, calling for an end to strongman Alexander Lukashenko's rule amid a heavy security presence and despite dozens of arrests. Belarus protests have entered a third week since the disputed presid
Tens of thousands of opposition supporters march through Minsk, calling for an end to strongman Alexander Lukashenko's rule amid a heavy security presence and despite dozens of arrests. Belarus protests have entered a third week since the disputed presidential election on August 9 in which Lukashenko claimed victory. Onliner.by

The Belarusian foreign ministry said the sanctions would be counterproductive.

"The history of our independent country shows eloquently that any attempts at sanctions on Belarus only lead their initiators to the opposite effect," ministry spokesman Anatoly Glaz said in a statement.

But Belarus would be "obliged to take appropriate retaliatory measures," he warned.

Lukashenko appeared to dangle the possibility of public consultation on constitutional reforms
Lukashenko appeared to dangle the possibility of public consultation on constitutional reforms AFP / Siarhei LESKIEC

The European Union is also seeking to impose new travel bans and asset freezes on Lukashenko's circle to punish those they say are responsible for violence, arrests and vote fraud.

The latest sanctions followed mass opposition protests in Minsk Sunday, with an estimated turnout of more than 100,000 people. There were also protests in other cities.

Timeline of post-electoral turmoil in Belarus
Timeline of post-electoral turmoil in Belarus AFP / Gal ROMA

The Belarusian authorities on Monday detained a member of the opposition's Coordination Council, set up by Tikhanovskaya's allies to organise a peaceful transfer of power.

Liliya Vlasova, a lawyer and international mediator, was detained after a search of her home, fellow Coordination Council member Pavel Latushko, a former arts minister, told AFP.

The search was carried out by officers investigating financial wrongdoing from a state audit body, while the grounds for Vlasova's detention were not known, he said.

Protesters speak with Belarusian special police officers at Sunday's rally to protest against disputed presidential election
Protesters speak with Belarusian special police officers at Sunday's rally to protest against disputed presidential election TUT.BY / -

She was the third Coordination Council member to be detained.

Other members, including Nobel-Prize winning author Svetlana Alexievich, have been summoned for questioning as "witnesses" over an investigation launched into an alleged attempt to seize power.

The committee's press secretary Anton Rodnenkov received a summons for questioning on Tuesday.

And a strike leader at the Belaruskali potash plant, Anatoly Bokun, was jailed for 15 days on Monday, his second such sentence.

Belarusian border guards refused entry Monday to the country's Catholic Archbishop, Tadeusz Kondrusiewicz, even though he is a citizen. They gave no explanation.

The 74-year-old archbishop had condemned violence by police and prison guards against detained protesters. A spokesman said he had returned to Poland.

And Lukashenko dismissed the Belarus charge d'affaires in Spain, Pavel Pustovoy, state news agency Belta reported, days after he had posted comments on Facebook favouring a recount of presidential ballots.

Lukashenko on Monday acknowledged the country he has led since 1994 was "somewhat authoritarian" in comments to the head of the Supreme Court.

He was speaking after perhaps the largest rally against his rule in Minsk, where protesters gathered outside his official residence.

Lukashenko acknowledged that people were calling for "changes", dangling the possibility of public consultation on constitutional reforms, which he suggested could be aimed at making courts more independent -- while insisting that in his view they were already.

He rejected opposition calls for a return to the 1994 Constitution in use before he pushed through changes increasing his own presidential powers.

The Peace March event was held on Lukashenko's 66th birthday and demonstrators left ironic gifts outside the Palace of Independence, guarded by heavily armed riot police and snipers.

Numerous journalists working for international media including AFP had their Belarusian foreign ministry accreditation revoked ahead of the protest without explanation.

The Belarusian Association of Journalists said police detained nine journalists over the weekend.