Supporters of the jailed environmental activist Tim DeChristopher are raising new concern about his treatment behind bars. DeChristopher is currently serving a two-year sentence for posing as a bidder to prevent oil and gas drilling on thousands of acres of public land. According to his legal defense fund, DeChristopher was recently removed from a minimum security prison ward into an isolated cell known as a “Special Housing Unit,” or SHU. He reportedly shares the tiny cell with another prisoner and has been allowed outside of it just four times over a two-week period. DeChristopher’s freedom to read books, write in his journal, and communicate with the outside world have all come under new restrictions.