He had taken refuge, first in his own castle of Sable, and afterwards with the Duke of Brittany, who kept him concealed, and replied to the king's envoys that he did not know where he was.

The king proclaimed his intention of making war on the Duke of Brittany until Peter de Craon should be discovered, and justice done to the constable.
Preparations for war were begun; and the Dukes of Berry and Burgundy received orders to get ready for it, themselves and their vassals.

The former, who happened to be in Paris at the time of the attack, did not care to directly oppose the king's project; but he evaded, delayed, and predicted a serious war.

According to Froissart, he had been warned, the morning before the attack, by a simple cleric, of Peter de Craon's design; but, "It is too late in the day," he had said; "I do not like to trouble the king to-day; to-morrow, without fail, we will see to it." He had, however, forgotten or neglected to speak to his nephew.

Neither he nor his brother, the Duke of Burgundy, there is reason to suppose, were accomplices in the attack upon De Clisson, but they were not at all sorry for it.