The zoo had security measures in place and staff living on site, according to the zoo's statement, so it's still unclear how the poachers broke in. Further details have not yet been released. The zoo could not immediately be reached for comment.
"This is poaching on a whole new level," Azzedine Downes, the president and CEO of IFAW, told The Dodo. "Wild rhinos have been in the sights of poachers for many years. It's horrifying to imagine a captive rhino falling prey to poachers' bullets."