A Pickens County High School teacher is facing a sexual assault charge after he allegedly used Snapchat to have “inappropriate conversations” with students, authorities said.

Daniel Allen Culbreth, a math teacher, was arrested Thursday night, Pickens Sheriff Donnie Craig said.

Pickens detectives acted on a tip that Culbreth had been using Snapchat, a social media app with more than 100 million active users, to communicate with girls, Craig said. Detectives had received information that some of his communication was “highly inappropriate.”

That was confirmed after detectives executed a search warrant on Culbreth’s Snapchat account, Craig said.

Eventually, detectives found that Culbreth had multiple “cyber-relationships” with students and had a physical relationship with at least one student, Craig said.

Culbreth was charged with computer exploitation of children and sexual assault by persons with supervisory authority, Craig said. He was being held Friday at the Pickens County Adult Detention Center. A first-appearance hearing that was scheduled for Friday was delayed until Monday.

“In cases like this, nobody wins,” Craig said. “Yes, we may have made a good arrest, but a number of teenage girls have been made victims by someone that we, as parents, have entrusted to care for them.”

Pickens County is about 60 miles north of downtown Atlanta.