KYIV/WARSAW, Nov 18 (Reuters) - Kyiv said on Friday Ukrainian experts had started work at the site where a missile killed two people in southeastern Poland, as the countries discuss what role Ukraine may play in an investigation into the incident.Poland and other Western states have said the missile that landed in Przewodow, a village near the border with Ukraine, was a Ukrainian air defence missile that went astray in pursuit of a Russian missile."The prosecutors of the relevant units of the national prosecutor's office or the regional prosecutor's office are in contact with representatives of the general prosecutor's office of Ukraine.Warsaw, Kyiv and their Western allies have said that ultimate responsibility for the explosion lies with Russia, which invaded Ukraine in February and has been pounding Ukrainian energy facilities with missiles.The funerals of the two agricultural workers killed in the blast will take place on Saturday and Sunday, local authorities said."