This is my theory, but I'm reading up on 616 in preparation for making a reading of it and I noticed this part:
Addendum 616-02: On █/█/████, A remote controlled rover obtained footage from within SCP-616-1. All personnel who viewed this footage directly committed suicide by various means within a two-month period. A security tape of the video with the recording playing did not cause any death, despite containing full sound and color recordings of the footage. It displayed a video of a small child violently being [DATA EXPUNGED] within a dark red room. All further attempts to observe past the "event horizon" have yielded similar results, and such expeditions are no longer permitted.
Might be a reference to 110-Montauk which would kinda tie in 616 to Scarlet King.