Nato chief Jens Stoltenberg has said there is “no indication” that a missile that struck Poland was a “deliberate attack”, saying it was likely fired by Ukraine while defending itself against a barrage of Russian weapons.

Stoltenberg told a press conference in Brussels that the western military alliance also had “no indication that Russia is preparing offensive military actions against Nato”.

Moscow denied responsibility for the strike in the village of Przewodów near the Ukrainian border on Tuesday afternoon, which came during Russia’s biggest missile attack on Ukraine in weeks. Ukrainian president Volodymyr Zelenskyy and some western nations initially blamed Russia for launching the missile, which Warsaw said was a strike by a “Russian-made missile”.