(ANSA-AFP) - WARSAW, 30 LUG - A missile that fell in eastern Poland early Thursday was likely Russian, Prime Minister Donald Tusk told journalists. "From the analysis of most of the traces, the recovered fragments point to a Russian KH-101 missile," he said. Polish authorities said Thursday that a 10 metre (33 feet) wide crater had been left by an explosion in an eastern region that occurred as Russia staged new missile attacks on neighbouring Ukraine. Prime Minister Donald Tusk was to head to the scene of the explosion in a field near the city of Lublin, about 80 kilometres (50 miles) from the Ukrainian border. Polish authorities did not immediately give the cause of the crater but it took place as Russia stage a massive new attack on the Lviv region in western Ukraine, near the border with Poland. EU council president Antonio Costa said that Polish airspace had been "violated" during the missile and drone strike. Residents of Tarnawa Kolonia, near Lublin, reported hearing an explosion at about 4:00 am (0200 GMT) that shook the windows of their homes, said a police statement. Police went to a field about two kilometres from the homes and found a 10-metre wide "crater" and "debris from a non-identified object", the statement added. The armed forces command said that an Mi-24 helicopter flew over the scene and reported "the probable impact place of the object on unbuilt land". (ANSA-AFP).