Dawn of the Scarlet Sun GM questions

[Heavenfluff]

I was reading over the Dawn of the Scarlet Sun module and I noticed something out of place. The last fight in the module has the enemy pick up a bow and arrow in their tatics, and they are geared to using a bow, but I cannot find a mention of a bow in either their statblock or in the room itself. Was there a fix to the module that I am not aware of, or was this enemy reworked?