Rian Rodriguez, 27, was arrested by NY state police on Friday and will be extradited back to his home state.
Rodriguez, who was a friend of Frisina's father, was arrested without incident and is being held in an Onondaga County jail.
According to a police affidavit, Caitlyn's friend told Scarlet that Caitlyn "hooked up with Rian and he worked his way into her life".
As CrimeOnline previously reported, Caitlyn Frisina, 17, left town last weekend with Rion Rodriguez, 27, and the two drove north from Columbia County, making it to Syracuse, New York, before a state trooper recognized their auto and pulled them over.
Caitlyn was reunited with her parents Saturday in Syracuse. ABC News reports the Columbia County Sheriff's Office said Rodriguez had family in Canada and possibly Pennsylvania.
Ward Frisina found Caitlyn's cellphone in her bedroom and a factory reset had been performed on it.
Officials at Fort White High School have suspended Rodriguez, who coached the boys soccer team at the north Florida school.
Meanwhile, new details are emerging in the case as cops say a student at the school went to officials back in August, claiming he had heard Frisina and the soccer coach were "in a relationship".
In the messages, Caitlyn makes explicit remarks about Rodriguez's genitals. She was found safely by the New York State Police on Friday afternoon by a Salina strip mall.
The officer pulled the auto over and took Rodriguez into custody without incident. He faces the charge of interference with child custody, a third-degree felony, in Florida.
The school contacted Frisina's parents about a possible "inappropriate relationship" but police did not find any evidence of it, he said.
"We had a very lovely, wonderful, very emotional reunion with her a little while ago", the teen's mother, Scarlet Frisina, said at a news conference on Saturday.
Frisina's friend told police that the teen had cold feet about trip but didn't know how to handle it.
"Once they know they're going to be interviewed and talked to by several different people, they may have gotten the cold shoulder", Smith said.
Rodriguez had not been arrested or charged late Friday, according to NY state police.
Frisina also told CBS News he blamed himself when his daughter vanished because he had initially encouraged Rodriguez to apply for the coaching job.