A South Jersey teacher accused of making inappropriate videos of nine female students was suspended and arrested a day after school administrators learned of the allegations, officials said Monday.

Adam L. Mayr, who has taught English at the Gloucester County Institute of Technology in Deptford since 2002, is accused of using a camera to record secret videos beneath the girls' dresses while he was acting as their teacher, according to an arrest warrant.

Eight of the students are 14, and one is 15.

Mayr, 37, of Washington Township, also coached the girls' freshman volleyball team and was an assistant coach of the boys' varsity tennis team.

On Friday, authorities charged Mayr with invasion of privacy, endangering the welfare of a child, and official misconduct, said Bernie Weisenfeld, a spokesman for the Gloucester County Prosecutor's Office.

All the videos were taken on school property, Weisenfeld said, declining to discuss other details, citing the ongoing investigation.

"For investigative purposes, we have intentionally left it vague," Weisenfeld said.

Administrators at the school learned of the allegations from a student on March 12 and notified law enforcement authorities the same day.

School administrators issued a statement Monday that they took "an allegation of inappropriate behavior by a teacher seriously. Such conduct is not tolerated. The safety and well-being of students is always our foremost concern."

An accusation, they said, is immediately investigated.

"In this situation, the district administration interviewed the students and immediately took action, including reporting the matter to the district's school resource officer and the Gloucester County Prosecutor's Office."

Mayr will remain on paid administrative leave until the investigation is complete, school officials said. On Monday, Mayr remained at the Salem County Jail with bail set at $300,000.

Detectives at the Prosecutor's Office are working with school administrators to identify all affected students and notify their families. Anyone with information is asked to contact the county's Major Crimes Unit at 856-384-5500.