invaded Lusatia and Meissen. He "seized Margrave Gero's march as far as the river Elbe", and also Bautzen, Strehla and Meissen. At the end of July, he participated at a meeting of the Saxon lords where Henry of Bavaria, who had meanwhile been crowned king of Germany, only confirmed Bolesław's possession of Lusatia, and granted Meissen to Margrave Eckard's brother, Gunzelin, and Strehla to Eckard's oldest son, Herman. The relationship between King Henry and Bolesław became tense after assassins tried to murder Bolesław in Merseburg, because he accused the king of conspiracy against him. In retaliation, he seized and burned Strehla and took the inhabitants of the town into captivity. Duke Boleslaus III of Bohemia was dethroned and the Bohemian lords made Vladivoj, who had earlier fled to Poland, duke in 1002. The Czech historian Dušan Třeštík writes that Vladivoj seized the Bohemian throne with Bolesław's assistance. After Vladivoj died in 1003, Bolesław invaded Bohemia and restored Boleslaus III who had many Bohemian noblemen murdered. The Bohemian lords who survived the massacre "secretly sent representatives" to Bolesław, asking "him to rescue them from fear of the future", according to Thietmar of Merseburg. Bolesław invaded Bohemia and had Boleslaus III blinded. He entered Prague in March 1003 where the Bohemian lords proclaimed him duke. King Henry sent his envoys to Prague, demanding that Bolesław take an oath of loyalty and pay tribute to him, but Bolesław refused to obey. He also allied himself with the king's opponents, including Henry of Schweinfurt to whom he sent reinforcements. King Henry defeated Henry of Schweinfurt, forcing him to flee to Bohemia in August 1003. Bolesław invaded the Margraviate of Meissen, but Margrave Gunzelin refused to surrender his capital. It is also likely that Polish forces took control of Moravia and the northern parts of the Kingdom of Hungary (present-day mostly Slovakia) in 1003 as well. The proper conquest date of the Hungarian territories is 1003 or 1015 and this area stayed a part of Poland until 1018. King Henry allied himself with the pagan Lutici, and broke into Lusatia in February 1004, but heavy snows forced him to withdraw. He invaded Bohemia in August 1004, taking the oldest brother of the blinded Boleslaus III of Bohemia, Jaromír, with him. The Bohemians rose up in open rebellion and murdered the Polish garrisons in the major towns. Bolesław left Prague without resistance, and King Henry made