Attention, please, I found something:
AA, page 6:
In the main floor/foyer area of a storage closet, Deputy Brown observed what appeared to be a reddish/brown substance that was smeared midway on the side of the closet wall. (Footnote 3: This reddish/brown stain was processed by CBI Laboratory and determined not to be blood.)
and
AA, page 11:
On May 13th, 2020, .....
During this effort, law enforcement located what they believed to be fresh tire impressions and a piece of cloth with a reddish/brown unknown substance on it.
...... As of the present date, these items appear to be unrelated to Suzanne's disappearance.
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Afaik, the found clothing was a teal or "baby blue" shirt and what would be, if it is indeed related to S's disappearance?? I wonder, if the cloth was sent to the CBI Laboratory too ....