At least six 
rangers were ambushed and killed by armed men in Virunga National Park 
in the Democratic Republic of the Congo on Sunday.
Famous for its 
mountain gorillas, the UNESCO World Heritage site has been the site of 
persistent unrest as a wide variety of armed groups battle for control 
of oil and other rich mineral deposits.
"Mai-Mai carried 
out an ambush at Nyamitwitwi in the far end of the park. The provisional
 toll is six park rangers killed along with two Mai-Mai," local 
government delegate Alphonse Kambale told AFP. Another park warden from 
the Congolese Institute for the Conservation of Nature (ICCN) was also 
seriously injured. Mai-Mai is an umbrella term for community-based 
militias.
With a multi-ethnic
 population of over 100 million, the Democratic Republic of Congo is 
Africa's second-largest territorial state after Algeria and is almost 
seven times the size of Germany. It is also home to the largest 
remaining rainforest areas in Africa.
Virunga park itself
 was created in 1925 and covers some 7,800 square kilometres (3,000 
square miles). It is home to about a quarter of the world's critically 
endangered population of mountain gorillas, many of whom live within a 
protected area at the foot of the Nyiragongo volcano.
The park is guarded
 by 689 armed rangers, at least 200 of whom have been killed in the line
 of duty over the past decade. In April 2020, a dozen rangers and 4 
civilians were killed by a still unidentified group.