Complex sentence: Videos from the crime scene depict a sparsely furnished home with large puddles of blood and taints smeared on the walls; in addition, more than 100 AK-47 bullet casings were found at the crime scene.
Split into simpler sentences: Videos from the crime scene depict a sparsely furnished home with large puddles of blood and taints smeared on the walls. In addition, more than 100 AK-47 bullet casings were found at the crime scene.