The footage began circulating on social media Thursday and appears to depict Kohberger in prison clothing walking back and forth in a cell.

Kohberger, 30, was moved to the Idaho Maximum Security Institution, south of Boise, just hours after being sentenced to four consecutive life sentences in July. He pleaded guilty to the first-degree murders of Madison Mogen and Kaylee Goncalves, both 21, and Xana Kernodle and Ethan Chapin, both 20.