So in the first month, on the thirteenth day, royal scribes were summoned to write down everything that Haman ordered. The orders were for the king's rulers and the governors in charge of each province, as well as for the officials of each people. They wrote in the alphabet of each province and in the language of each people. They wrote in the name of King Ahasuerus and sealed the order with the king's royal ring.
Fast runners were to take the order to all the provinces of the king. The order commanded people to wipe out, kill, and destroy all the Jews, both young and old, even women and little children. This was to happen on a single day—the thirteenth day of the twelfth month (that is, the month of Adar). They were also to seize their property.
References for Esther 3:13
A copy of the order was to become law in each province and to be posted in public for all peoples to read. The people were to be ready for this day to do as the order commanded.
Driven by the king's order, the runners left Susa just as the law became public in the fortified part of Susa. While the king and Haman sat down to have a drink, the city of Susa was in total shock.