"The screen name was Nikolas Cruz", Bennight said on YouTube.
"I'm going to be a professional school shooter", a commenter wrote a year ago on YouTube under the name "Nikolas Cruz".
"Im going to be a professional school shooter", read the comment, left by a user with the name Nikolas Cruz, the same name of the suspected shooter who opened fire at Marjory Stoneman Douglas High School on Wednesday, killing at least 17 people.
A YouTube blogger has told CNN that he tipped off the Federal Bureau of Investigation to a user with the same name as the Florida high school mass shooting suspect, after he saw a comment from a "Nikolas Cruz" that raised concern this past September.
How and why that comment ended up on Bennight's Youtube page on September 25, 2017, is still a mystery to the bondsman.
"This comment said, 'I'm going to be a professional school shooter, ' and I knew that I couldn't just ignore that", he said.
"I think in today's online world, it is very hard to narrow down who does what without more information", Bennight told CNN's Jake Tapper later Thursday, "and unfortunately, I wasn't able to provide them with much".
But they were back in touch on Wednesday following the mass shooting. Special Agent Ryan Furr of the FBI's Miami field office left Bennight a voicemail on Wednesday.
The FBI reportedly investigated a YouTube account that may have belonged to the alleged killer in yesterday's Florida school shooting.
Later in the day, agents from the MS field office visited Bennight and questioned him about Cruz.
He tweeted: "So many signs that the Florida shooter was mentally disturbed, even expelled from school for bad and erratic behavior".
He said he doesn't remember which video Cruz made the comment, and authorities have not confirmed whether the person who made the comment is the same Nikolas Cruz accused in the Parkland school shooting.