The Duke of Cambridge, 40, issued a plea to help rangers in the wake of the murder of a leading wildlife ranger in South Africa last week.
The Helping Rhinos organization announced last week that Anton Mzimba was shot and killed outside of his home on July 26. "This follows recent death threats and highlights the daily threat facing Rangers," the organization wrote on Twitter.
The following day, conservation campaigner Prince William added his praise for Mzimba, who he had spoken with. "I'm deeply saddened to learn of the killing of Anton Mzimba who I spoke to in November," William wrote. "Committed and brave, rangers like Anton are central to the conservation of Africa's fantastic wildlife. Those responsible must swiftly be brought to justice. My thoughts are with his family."