The UK and its allies are still trying to establish the facts about the missile which hit Polish territory on Tuesday, PM Rishi Sunak says.

“All of us want to get to bottom of what happened,” he told a press conference at the G20 summit of world leaders in Bali, reports BBC.

Two people were killed after a missile landed in eastern Poland near the Ukrainian border following a wave of Russian strikes across Ukraine.

US President Joe Biden earlier said it was “unlikely” that the missile was fired from Russia.

Russia’s defence ministry denies it was responsible and says accusations are a “deliberate provocation aimed at escalation.”

Polish President Andrzej Duda himself has said there is no conclusive evidence as to who launched the missile.

The Nato military alliance, which Poland is part of, is holding a meeting in Brussels – it has called what happened a “tragic incident.”