The two brothers' good relationship deteriorated after King Andrew had the child Solomon crowned king in 1057 or 1058. The coronation was the consequence of the peace negotiations with the Holy Roman Empire, because the Germans did not acquiesce in a marriage between Solomon and Judiththe sister of the young German monarch, Henry IVuntil Solomon's right to succeed his father was declared and publicly confirmed. Thereafter Andrew was determined to secure the throne for his son. He invited Béla to his manor in Tiszavárkony, where the King offered his brother a seemingly free choice between a crown and a sword (which were the symbols of the royal and ducal power, respectively). However, he had ordered that Béla be murdered if he chose the crown. Having been informed of his brother's secret plan by one of his own partisans in the royal court, Béla opted for the sword, but he departed for Poland after the meeting.