Two people died today after an explosion at a farm in the Polish village of Przewodów, near the border with war-torn Ukraine, but the cause of the explosion is still unclear, the Fire Brigade announced.
Unconfirmed claims are circulating in the Polish media that the cause of the explosion was two stray Russian missiles that crossed into Poland from Ukraine.
In the last few hours, images showing fragments of rockets at the site of the incident that happened in Poland have circulated on social networks. Two people lost their lives.
The BBC says it has not yet been able to verify these photos. She has spoken to 3 military defense experts about what the footage shows.
Mark Cancian is one of them. He says the missiles could 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.
"Who launched the missile is unclear," says J. Andrés Gannon, a security expert at the US Council on Foreign Relations. He also agrees that it could be from an S-300 system.
"We know that Russia has used the S-300 for ground attacks even though it is an air defense system. But Ukraine also uses them for air defense against missiles," he adds.
Also Dr. Justin Bronck, a senior fellow at the panel, agrees that the missile could be from the S-300 system. He says there is still not enough evidence to identify him.
The head of NATO, Jens Stoltenberg wrote on Twitter that he has spoken with Polish President Andrzej Duda about the incident.
"I offered my condolences for the loss of life. NATO is monitoring the situation and allies are consulting closely. It is important that all the facts are proven," he says. While the US President, Joe Biden has been informed about the reports coming from Poland. Officials said he spoke with Polish President Andrzej Duda.
Polish government spokesman Piotr Muller has confirmed that the country is increasing the readiness of its military units. He announced that the government "is verifying if there is a need to activate Article 4 of NATO".
This article states: "The Parties shall consult together whenever, in the opinion of any of them, the territorial integrity, political independence or security of any of the Parties is threatened."
Ukrainian President Volodymyr Zelensky immediately accused Russia of deliberately attacking Poland, a NATO state. While Russian state media have hinted that the missiles were Ukrainian.