According to Martin County Sheriff William Snyder the suspect was found ‘grunting and growling,’ and ‘making animal noises’ at the time of his arrest, the Daily Mail reports.
'The suspect in this case was abnormally strong,' Snyder said. 'So getting that excited delirium type increased adrenaline strength.'
'Somebody not feeling pain, not responding to a dog bite, repeated stuns from a Taser, taking three to four deputies and officer dog to get him off. That’s somebody with a lot more strength than you would normally encounter.'
Investigators with the Martin County Sheriff's Office confirm Harrouff may have been high on drugs when he attacked the couple.
Snyder added that he 'would not be surprised' if the man was under the influence of flakka – a psychoactive stimulant that has been linked to bizarre behavior and drug overdoses, People reports.
'When you see a case like this where someone is biting off pieces of somebody's face, could it be flakka?' Snyder said. 'The answer is it absolutely could be a flakka case.'