UN: Reports of rocket explosion in Poland cause concern

Antonio Guterres is very concerned by the reports of a missile exploding on Polish territory, said a Spokesperson for United Nations Secretary-General Stéphane Dujarric.

"It is absolutely essential to avoid escalating the war in Ukraine," he said.

"He sends his condolences to the families of the victims. He hopes that a thorough investigation will be conducted," Dujarric tweeted.

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