National Guards in the Judiciary?

Yesterday, images circulated profusely on social networks of members of the National Guard going to two offices of the Judiciary of Mexico City, who were unemployed. The official version is that they were going to do paperwork, but when they saw that the offices were closed, they withdrew. With that explanation, only questions arise. Didn't they really know about the closing of the offices? Why not send someone in uniform to do the paperwork? Wi…