John Gill Commentary Esther 9:11

"On that day the number of those that were slain in Shushan the palace was brought before the king." — Esther 9:11 (ASV)

On that day the number of those that were slain in Shushan the
palace was brought before the king .
] Either by order of the king, that he might know how many enemies the Jews had in the city, and how many of subjects had been slain; or officiously by others, with an intention to irritate the king against the Jews.