Police have arrested a Montgomery County teacher for allegedly sexually abusing a female student at Albert Einstein High School in Kensington.

Montgomery County police said that Richard Brian Shemer, 50, developed a relationship with a student starting in the 2012-13 school year and sent her inappropriate e-mails.

“During the current school year, the victim visited Shemer’s classroom where they had conversations about sex and sex acts,” according to a news release from the police department.

Shemer and the student also exchanged e-mails outside of school, authorities say. The student’s parents notified police after finding the e-mails.

Shemer has worked at Einstein since 2010, said Gboyinde Onijala, a spokeswoman for Montgomery County schools. He has worked in the school system since 2002, previously working at Cabin John Middle School and Rockville High School.

“Mr. Shemer has been placed on administrative leave and we will conduct an internal investigation after the police have completed their investigation,” Onijala said in an e-mail statement.

This is the latest arrest of a Montgomery County school teacher accused of sexually abusing students. In August, police charged music teacher Lawrence W. Joynes, 54, of sexually abusing 14 elementary school students over eight years since at least 1991.

Police arrested Shemer at his Potomac home Wednesday and he is being charged with sex abuse of a minor.