Bolivian police say that a 42-year-old man who fell asleep under an ant-infested tree was been killed by insect bites.

Beni city Police Chief Rolando Ramos says that farmworker Santiago Ortiz apparently had been drinking before sitting down beneath a Palo Santo tree — a type noted for its aromatic wood and for hosting a particularly aggressive sort of ant.

Ramos said Tuesday that when police reached the scene, the man was already dead, but swarms of ants were still crawling across his body.