A Selma High School teacher is accused of having sex with a student after an obscene video began circulating among students, police said.

Charlaina Lee Wilson, 33, of Knoxville, was arrested Friday and charged with second-degree rape, second-degree sodomy, transmitting obscene material to a child by computer and distributing material harmful to minors, according to Selma police. She is being held on $1,006,000 bond.

Lt. Sam Miller said school officials and police began investigating after learning of the video.

The video featured Wilson performing a solo sexual act, he said.

Police say Wilson had sex with the student multiple times and at different locations, including on school grounds.

Miller said Wilson's relationship with the student spanned a couple of years.

Wilson is an agriculture teacher at the school.

The case remains under investigation.