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A naked man who chewed off the face of another manin what is being called a zombie-like attack may have been under theinfluence of "bath salts," a drug referred to as the new LSD, accordingto reports from CNN affiliates in Miami.

The horrific attack occurred Saturday and was only stopped after a police officer shot the attacker several times, killing him.

Larry Vega witnessed the attack on Miami's MacArthur Causeway. He told CNN affiliate WSVN he saw one naked man chewing off the face of another naked man.

"The guy was like tearing him to pieces with his mouth, so I toldhim, 'Get off!'" Vega told WSVN. "You know it's like the guy just kepteating the other guy away, like ripping his skin."

"It was just a blob of blood," WSVN quoted Vega as saying. "You couldn't really see, it was just blood all over the place."

Vega said he flagged down a passing police officer.

"When the officer approached him, told him to stop, pointed a gun athim, he turned around and growled like a wild animal and kept eating atthe man's face," Fraternal Order of Police President Armando Aguilar told CNN affiliate WPLG.

Augilar said he suspects the attacker, identified as 31-year-old RudyEugene, was under the influence of "bath salts." Four other drug useinstances in Miami-Dade bear resemblances to Saturday's attack, he toldWPLG.

"It causes them to go completely insane and become very violent" and take off their clothes, Augilar told WPLG.

Dr. Paul Adams, an emergency room physician at Jackson Memorial Hospital in Miami, told CNN affiliate WBFS that the drug makes users delirious. They exhibit elevated temperatures and extreme physical strength, Adams said.

"I took care of a 150 pound individual who you would have thought hewas 250 pounds," WBFS quoted Adams as saying. "It took six securityofficers to restrain the individual."

Adams said users have been known to use their jaws as weapons, according to WBFS.

According to a 2011 report from the National Institute of Drug Abuse, bath salts contain amphetamine-like chemicals.

"Doctors and clinicians at U.S. poison centers have indicated thatingesting or snorting 'bath salts' containing synthetic stimulants cancause chest pains, increased blood pressure, increased heart rate,agitation, hallucinations, extreme paranoia, and delusions," accordingto the NIDA report.

In October, the Drug Enforcement Administration made possession ofthe stimulants in bath salts,Mephedrone, 3,4 methylenedioxypyrovalerone(MDPV) and Methylone, illegal under an emergency order. The order lastsfor a year with a possible six-month extension.

The stimulants have been placed under restrictions or banned in 37 states, according to a DEA press release.

The victim of Saturday's attack, whom police have not identified, wasin critical condition at Jackson Memorial on Monday, according to theWPLG report. Augilar told WPLG that 75% to 80% of his face was missing.

Eugene had an arrest record, mostly misdemeanors, including a batterycharge from when he was 16 that was later dropped, according to theMiami Herald.

He had been married but divorced in 2007, WPLG reported. His formerwife told the station that Eugene had been violent toward her.

Homeless people near where the attack took place said Eugene was often seen around the area looking confused, according to WPLG.

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