The finding comes two more cannibal attacks were reported in the US, following the police shooting of Rudy Eugene, who growled at officers as he chewed off most of a homeless man’s face.
Eugene is believed to have taken the over-the-counter ecstasy-like drug, which is part of a new line of’ bath salts’.
A naked Eugene tore into the face of 65-year-old Ronald Poppo, who was sleeping in the shade on elevated train tracks.
The second incident echoed the Miami attack. A homeless man known as Brandon De Leon snarled at and threatened to eat two officers.
A third incident took place in Louisiana, where Carl Jacquneaux, 43, bit off a chunk of his victim’s face.
Miami police are now on high alert for homeless men who appear to be acting unusually.
When De Leon, 21, was arrested for disturbing the peace in North Miami beach, police were forced to fit him with a Hannibal Lecter-style mask.
In the police car he slammed his head against the plexiglass divider and shouted at officers, “I’m going to eat you”, NBC Miami reported.
“Brandon growled and opened and closed his jaw, slamming his teeth like an animal would,’ the police report said.
Jacquneaux, 43, is accused of attacking Todd Credeur at his home in Scott, Louisiana, after becoming upset over a domestic issue.
Scott Assistant Police Chief Kert Thomas said: “During the attack, the suspect bit a chunk of the victim’s face off.”
Credeur reportedly managed to spray Jacquneaux in the face with wasp spray to stop him from eating any more of his face.
Jacquneaux then allegedly left the home and went to another man’s home where he held him at knife point and stole a hand gun. This is where police found him and arrested him.
Cloud Nine is “addictive and dangerous”, a police memo warned, and of a “disturbing trend in which new drugs are sold in the guise of household products”.
It is thought to stimulate the central nervous system and symptoms include heart palpitations, nausea, hallucinations, paranoia and erratic behaviour.