Alleged sexual Snapchat messages between Caitlyn Frisina and Rian Rodriguez indicate a possible relationship between the recently found Florida teen and her assistant soccer coach, according to new information obtained from police documents by First Coast News.

The 17-year-old girl was found along with Rodriguez, 27, in Syracuse, New York by state police on Friday during a traffic stop. Both were detained without incident.

Rodriguez faces a felony charge of interfering with the custody of a minor.

Police first learned of the girl’s disappearance on Sunday, when the girl’s parents said Caitlyn had exited her room through her bedroom window without her parents’ permission. The parents were able to follow footprints from the home to a nearby road, but lost track of her after that, according to a newly released arrest affidavit by the Columbia County Sheriff’s Office.

Caitlyn’s mother later learned that $200 had been withdrawn from her bank accounts from an ATM in St. Marys, Georgia. The parents also found their daughter’s cellphone in her room and it had been reset to factory settings.

Frisina’s father was able to recover alleged messages that his daughter and Rodriguez had exchanged on Snapchat. Those messages, sexual in nature, allegedly discussed Rodriguez’s genitals, according to the affidavit.

Rodriguez was believed to be driving a 2001 Red Mercury Sable and was considered a person of interest in Caitlyn’s disappearance.

The affidavit also states that a school resource officer reached out to either the sheriff’s office or the parents about a rumor that circulated around that Caitlyn and Rian had been in a relationship in August right after school started. The investigation into this rumor ended after it was deemed false and the boy who brought up the rumor recanted his story, according to the arrest affidavit.

Investigators were able to continue to track their movements through credit card usage in South Carolina and other states, the affidavit said.

The Columbia County Sheriff’s Office is scheduled to hold a press conference on at 2 p.m. on Monday to further discuss the case.

Stay with First Coast News as we continue to follow this developing story.