ST. AUGUSTINE, Fla. -- Surveillance video from Monday night shows a man jumping into the crocodile pool at the St. Augustine Alligator Farm. A short while later, a crocodile bit him.

"He gets bit, and goes out [of the water] and for some reason goes back in," Alligator Farm Director John Brueggen said. "Yeah. That's why I'm concerned for someone like this."

Police say the man who broke into the Alligator Farm and hung out for hours in the Nile Crocodile enclosure is 23-year-old Brandon Keith Hatfield of Green Cove Springs.

While Brueggen said he was worried about his crocodiles, he is also worried about the man's mental state.

"I'm concerned about him. I don't know if it was a suicide attempt or if he was on so many drugs he didn't know what he was doing," Brueggen said.

The St. Augustine Police told First Coast News that Hatfield was "probably high on something" and that a toxicology test was done to determine what was in his system. The results have not been released.

A look through Hatfield's criminal history shows he just got out of jail Friday, three days before his visit with the crocodiles. He had been in the St. Johns County jail on charges of drug possession for methamphetamine and for stealing a car.

Social media posts from people who know Hatfield indicate he has struggled with drugs.

Police say Hatfield was bitten on the foot or leg area. Some people wonder why the three crocodiles -- about 12-feet long -- didn't kill him.

The park's reptile curator said the man is alive because these crocs are smart, and these captive animals expect humans to throw them food ... not be the food themselves.

"The crocodiles were probably totally shocked by this," Brueggen said. "They've been captive crocs their whole lives. At no point has any human gone jumping in the water with them."

This appears to be an example of the effects of drugs with a strange and bizarre result.