Barbara Plett Usher
North America correspondent, BBC News

The Americans have responded cautiously to reports of Russian missiles landing in Polish territory.

The White House, Pentagon and state department all say they cannot confirm what happened and are working with the Polish government to gather more information.

They’ve also repeated America’s commitment to defend every inch of Nato territory if it comes under attack, something President Joe Biden has called a “sacred obligation".

But neither the US nor its Nato allies want to be drawn into a direct confrontation with Russia.

The state department said that intent would be a factor in determining next steps.

Kurt Volker, a former US special envoy for Ukraine, also told the BBC it was very important to establish whether any missile strike on Polish territory had been intentional or accidental.

Nato should demand a clear explanation from Russia, he said, and, if a missile had gone astray, take steps to make sure it wouldn’t happen again.

There was potential for mistakes on Tuesday, with Ukrainians trying to shoot down a massive barrage of Russian missiles targeting their electricity grids.

European Commission President Ursula von der Leyen has shared her thoughts on the incident.

"Alarmed by reports of an explosion in Poland, following a massive Russian missile strike on Ukrainian cities," she writes in a tweet, external.

"I extend my condolences and my strongest message of support and solidarity with Poland and our Ukrainian friends."

US President Joe Biden has been briefed on the reports coming out of Poland and is speaking to Polish President Andrzej Duda, officials say.

US National Security Advisor Jake Sullivan spoke to his Polish counterpart Jacek Siewiera earlier.

Nato chief Jens Stoltenberg tweets, external that he spoke to Polish President Andrzej Duda about the explosion.

"I offered my condolences for the loss of life. Nato is monitoring the situation and Allies are closely consulting. Important that all facts are established," he says.

Josh Cheetham
Open Source Analyst, BBC News

Image source, Twitter

In the last few hours images have been circulating on social media, reportedly showing missile fragments from the scene of the attack in Poland.

The BBC has been unable to verify these pictures, but we've spoken to three defence experts about what they show.

Mark Cancian, from think tank CSIS, believes it may be from an S-300 system. This type of missile is typically used for surface-to-air attacks, and has been used by both Russia and Ukraine throughout the war.

Image source, Twitter

"Who fired the missile is unclear," says J Andrés Gannon, a security expert at the US Council on Foreign Relations, who agrees that it may be from an S-300 system.

"We know Russia has been using the S-300 for ground attacks even though it’s an air defence system, but Ukraine also uses them for air defence against cruise missiles."

Dr Justin Bronk, a senior fellow at think tank Rusi, agrees that it may be from an S-300 system, but there isn't enough evidence to identify it yet.

Polish government spokesman Piotr Muller has confirmed that there was an explosion that killed two Polish citizens.

Poland is raising the readiness of its military units, he says, and "verifying if we need to activate Nato Article Four".

That article says: "The Parties will consult together whenever, in the opinion of any of them, the territorial integrity, political independence or security of any of the Parties is threatened."

As Poland's National Security Council holds its emergency meeting the government is getting more expressions of support from Nato allies.

German Foreign Minister Annalena Baerbock tweets, external: "We are monitoring the situation closely and are in contact with our Polish friends and Nato allies."

Dutch Prime Minister Mark Rutte tweets, external a similar message, saying "it is important now to establish what exactly has happened".

French President Emmanuel Macron also says he is in contact with Poland and envisages talks at the G20 tomorrow on the incident.

The EU summit chairman, European Council President Charles Michel, tweets, external: "Shocked by the news of a missile or other ammunition having killed people on Polish territory. My condolences to the families. We stand with Poland. I am in contact with Polish authorities, members of the European Council and other allies."

Ukrainian President Volodymyr Zelensky has accused Russia of deliberately attacking Poland, a Nato state.

"This is a Russian missile attack on collective security," he said. "This is a very significant escalation. We must act."

"Terror is not limited to our national borders," he said, adding that it was "only a matter of time before Russian terror goes further".

Zelensky, whose country is not a member of Nato but has close ties to the alliance, also said the missile barrage against his own country's power grid was a "slap in the face of G20".

"This act of genocide of Ukrainians in response to my peace plan is a cynical slap in the face of G20 and the world," he wrote on Telegram, external.

Will Vernon
BBC News, Moscow

Russian state media are already hinting that it was in fact Ukrainian, and not Russian, missiles that hit Polish territory. These allegations are unsubstantiated.

State news agency Ria Novosti quoted a Russian "military expert" who claimed that Russian cruise missiles “would not have been able to reach Polish territory, but Ukrainian S-300 [surface-to-air] missile systems, functioning abnormally, could”.

Several pro-Kremlin Telegram channels published similar claims.

Poland's eastern neighbours in Nato have voiced solidarity with the Polish government over what was reported to be a stray Russian missile strike on a Polish village.

Details of the incident have not been confirmed by the Polish government.

Expressions of support and solidarity were tweeted by the governments of the three Baltic states - Estonia, Latvia and Lithuania - as well as by those of the Czech Republic and Slovakia, Poland's neighbours to the south.

Kostas Kallergis
BBC News, Europe Producer

Asked about tonight’s developments in Poland, a Nato official told the BBC: "We are looking into these reports and closely co-ordinating with our ally Poland.”

Rob Cameron
Reporting from Prague

The Czech parliament has passed a motion describing the current Russian administration as "terrorist".

The motion singled out widespread attacks on Ukrainian civilian targets and key energy infrastructure.

During the vote, 129 of 156 MPs present in the 200-seat chamber approved the motion, which means several dozen opposition MPs are likely to have voted with the government.

The motion was opposed by all 14 MPs in the far-right SPD party.

The Czech centre-right government is one of Ukraine's most stalwart supporters, and was among the first to send heavy weapons - including tanks - to the Ukrainian armed forces.

Russia has denied statements from Polish media outlets and officials that Russian missiles fell on the Polish village of Przewodó near the Ukrainian border.

The Russian ministry of defence posted on its Telegram, calling the reports "a deliberate provocation in order to escalate the situation".

"No strikes were made against targets near the Ukrainian-Polish state border by Russian means of destruction," the statement said.It said missile fragments from the scene, reportedly filmed by Polish media, did not relate to Russian weapons.

The latest on reports that stray Russian missiles hit a farm in a Polish village, killing two people:

• Poland's National Security Council is meeting after reports that Russian missiles struck a farm in Przewodów, near the Ukrainian border
• There is no official confirmation yet from the Polish government or US officials - the original source, AP reports, was US intelligence
• A Pentagon spokesman said: "We are aware of the press reports alleging that two Russian missiles have struck a location inside Poland near the Ukraine border. I can tell you that we don't have any information at this time to corroborate those reports and are looking into this further
• The Russian defence ministry has called the reports “a deliberate provocation”
• Kyiv and other Ukrainian cities were targeted by dozens of Russian missiles on Tuesday - Ukraine says Russia launched more than 90 missiles, of which 73 were shot down
• Ukraine says this was Russia's biggest strike against the country's energy system since the invasion in February - many power blackouts were imposed as infrastructure was hit.

Will Vernon
BBC News, Moscow

Russia's defence ministry has commented on the reports regarding alleged Russian missiles striking Polish territory, saying they’re a "deliberate provocation".

Analysis: Russia has no interest in targeting Polish farmspublished at 19:52 Greenwich Mean Time 15 November 2022

19:52 GMT 15 November 2022

Paul Adams
BBC Diplomatic correspondent

The Polish government has yet to confirm what happened close to its border with Ukraine.

But images circulating on social media show a crater and an overturned trailer, apparently loaded with grain. Another image appears to show a fragment of a missile.

In Washington, a Pentagon spokesman said he was aware of the reports, but had no information to corroborate them.

There are a number of possible explanations.

Russia has no interest in targeting Polish farms, so some kind of malfunction seems possible.

And, on a day when Ukraine’s air defences were working hard to bring down Russian missiles, it’s also possible that one of those missiles was knocked off course.

A former US ambassador to Nato, Kurt Volker, told the BBC it was important to give Russia a chance to explain what had happened.

Volker said it was likely to have been an accident. But, he said, we need to hear Russia say that.

Nato, he said, should demand an explanation.

As we've been reporting, a Russian missile has reportedly killed two people after striking a Polish village near the Ukrainian border.

A senior source in the Polish prime minister's office has told the BBC: "It's informational chaos."

"I have no certainty and I cannot confirm anything," the source said.

We've had some comments from the Pentagon.

The Department of Defense Press Secretary, Brig Gen Patrick S Ryder, has said:

“We are aware of the press reporting on this. We have no information at this time to corroborate those reports but again, are taking them seriously and looking into them. And so I will make sure that we provide you with any updates as soon as we have them.”

He continues: “We're looking into these reports - don't have any information to corroborate them at this time. So I don't want to speculate or get into hypotheticals. When it comes to our security commitments and Article 5, we've been crystal-clear that we will defend every inch of Nato territory.”

Hungary's Prime Minister Viktor Orban has called an emergency meeting of his Defence Council, his spokesman Zoltan Kovacs tweets., external

It is in connection with the reported stray Russian missile strike on a Polish village and a temporary suspension of the Russian oil supply to Hungary via the Druzhba oil pipeline.

Russian pipeline operator Transneft, quoted by Russia's Ria news agency, says Ukrainian authorities informed it that they had temporarily suspended the oil flow due to a fall in pressure.

Laura Gozzi
BBC News Live reporter

Image source, epa

Following Tuesday's nationwide attacks on Ukraine, the governor of the Kharkiv region, Oleh Synyehubov, has said power supply to the region is practically entirely cut off and that it will remain so at least until the morning.

The north-eastern region is already seeing wintry weather, with snow expected in the coming days and temperatures predicted to fall to a low of 1C tonight.

The Ukrainian government has long warned citizens that Russia will continue to target energy infrastructure ahead of Ukraine's famously harsh winters.

Energy Minister Herman Halushchenko says Russia's latest attack tries to "inflict maximum damage on our energy system on the eve of winter".

In October, Deputy Prime Minister Iryna Vereshchuk even urged Ukrainian refugees not to return until spring to help ease pressure on the energy system, saying that as temperatures dropped, the situation would "only get worse".

"If it is possible, stay abroad for the time being," she said at the time, adding: "We need to survive the winter."