Looks like flowers.
That’s what I thought.
The images of the front porch area released early last week showed what looked like crushed flowers next to the blood drops on the ground. I don’t know if this has symbolic meaning or is incidental.
The guy goes out of the front door vestibule and bends down and grabs some growth from the landscape bushes and then comes back and covers the camera as if to cover his masked image from the residents.