>> Sacked soldier denies torturing monkeys
>> Photos show cruel killing of endangered monkeys
>> Police probe into cruel killing of rare monkeys
The police have previously held huntsman Ha Van Tu, 37, in Krong Pach, Dak Lak in custody for the same crime.
A senior official of the 3rd Corps told newswire VnExpress that Que, 37, was arrested in Ia Grai district in Gia Lai central highlands province.
Que and Tu are said to join others to use matchlocks to open fire at the two primates in a forest in Sa Thay district in Kon Tom central highlands province, they said.
They then sold them to serviceman Nguyen Van Quang, 20, and two other soldiers at VND1.2 million (approximately $60).
Local police have previously filed criminal charges against Tu and issued wanted notice for four others including Que over charges of “violating regulations of protecting endangered wild animals”.
Meanwhile soldier Quang who has taken photos of the slaughtering of the monkeys and uploaded them on Facebook, triggering widespread public outrage, and two servicemen have been sacked from the arm.
Eight other servicemen have been given warnings for their involment in the case.