A game reserve manager allegedly involved in rhino poaching shot and killed himself at the reserve in Dwaalboom, near Thabazimbi, Limpopo, police said on Tuesday.
Colonel Vishnu Naidoo said the body of 40-year-old Walter Nkuna was found in his room in the reserve on Monday.
"Police were following leads of rhino poaching after a rhino was killed last Friday at the game farm. The police were about to confront the suspect when he was found dead.
"His official firearm was found next to his body. It is suspected he might have ended his life when police were about to arrest him."
There was no evidence of foul play, Naidoo said.