6 Virunga park staffers killed in ambush
Five rangers and a staff driver for Virunga National Park in the Democratic Republic of the Congo (DRC) were killed in an ambush April 9.
A sixth ranger was injured in the ambush, but he is recovering.
The attack, carried out in the park's central region, was the deadliest in Virunga's history, and brings the park's death toll for the year to seven and to 175 in the past 20 years.
The park is known for its population of critically endangered mountain gorillas, among other endangered species.
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