KYIV, Nov 8 (Reuters) - Poland accused Belarus of trying to spark a major confrontation on Monday as video clips showed hundreds of migrants walking towards the Polish border and some trying to breach the fence using spades and other implements.
Warsaw said it had deployed additional soldiers, border guards and police, while neighbouring Lithuania said it might introduce a state of emergency on its border with Belarus.
The European Union, to which Poland and Lithuania both belong, accuses Minsk of encouraging migrants from the Middle East and Africa to cross into the EU via Belarus, as a form of hybrid warfare in revenge for Western sanctions on President Alexander Lukashenko's government over human rights abuses.
Poland said it had withstood the first attempts on Monday by the migrants to force their way across the border.
A video distributed by Polish authorities showed one man cutting part of a barbed wire fence, another attacking the fence with a spade, while a Polish soldier sprayed an unidentified substance from a can.
In an earlier video, shared by the Belarusian blogging service NEXTA, migrants carrying rucksacks and wearing winter clothing were seen walking on the side of a highway. Other videos showed large groups of migrants sitting by the road and being escorted by armed men dressed in khaki.
"Belarus wants to cause a major incident, preferably with shots fired and casualties. According to media reports, they are preparing a major provocation near Kuznica Bialostocka, that there will be an attempt at a mass border crossing," Deputy Foreign Minister Piotr Wawrzyk told Polish public radio.
Lithuania said it also was moving additional troops to the border to prepare for a possible surge in migrant crossings. Latvia said the situation was "alarming".
'INHUMAN ATTITUDE'
Lukashenko's government has repeatedly denied manufacturing a migrant crisis, blaming the West for the crossings and treatment of migrants.
The Belarusian state border committee confirmed on Monday that many refugees were moving towards the Polish border, but said Warsaw was taking an "inhumane attitude".
Poland has stationed more than 12,000 troops at the border, its defence minister said, while sharing aerial footage of migrants clustered on the Belarusian side.
"They throw tree trunks on the fence so as to reduce the height of this fence to breach it," said Katarzyna Zdanowicz, spokeswoman for Polish border guards in the area.
Exiled Belarusian opposition leader Sviatlana Tsikhanouskaya urged a strong response from the EU and United Nations.
"Belarus' regime escalates the border crisis – migrants are pushed to EU border by armed men," she tweeted. "The migrant smuggling, violence & ill-treatment must stop."
The EU, the United States and Britain imposed sanctions on Belarus after Lukashenko unleashed a violent crackdown on mass protests following a disputed election last year.
"Lukashenko's regime is putting the lives and health of migrants at risk, using them to escalate the border crisis and provoke Poland," said Bix Aliu, the U.S. Chargé d'Affaires in Warsaw. "Hostile actions by Belarus are exacerbating the situation on the border with the EU and NATO dangerously and must end immediately."
Lukashenko has defied opposition calls to resign, buttressed by money and diplomatic support from traditional ally Russia.
Kremlin spokesman Dmitry Peskov on Monday defended Minsk's handling of the migrant issue, saying Belarus was taking all necessary measures to act legally.
Charities say the migrants face freezing weather conditions and a lack of food and medical attention.
Poland said seven migrants had been found dead on its side of the border, with reports of more deaths in Belarus.
Humanitarian groups accuse Poland's ruling nationalists of violating the international right to asylum by pushing migrants back into Belarus instead of accepting their applications for protection. Poland says its actions are legal.
Poland's Prime Minister Mateusz Morawiecki said on Facebook: "The Polish border is not just a line on a map. The border is sacred - Polish blood has been spilled for it!".
