This story was updated Thursday to include comment from the school district.

A 30-year-old teacher has been arrested after a teen told police they had a sexual relationship when she was a junior at Cherokee High School in Burlington County.

Brantley Cesanek, who taught Latin at the school, was charged with sexual assault, endangering the welfare of a child and official misconduct when he was arrested at his Haddon Township home Tuesday, according to a joint statement from prosecutors in Burlington and Camden counties.

According to court documents and the statement, the woman, now over 18, told police she participated in sexual acts with Cesanek multiple times during 2016 to 2017 when she was 16 and 17 years old.

Cesanek told police the pair only had a sexual relationship after she graduated in 2017, according to an affidavit of probable cause filed by the Camden County Prosecutor's Office.

However, he also told authorities in a video-recorded interview that she had slept over at his house twice while she was a student.

Cherokee High School in Evesham Township is part of the Lenape Regional High School District. The district notified parents in an email Wednesday that Cesanek had been placed on leave and that the incident that led to his arrest didn't involve any current students.

"As soon as we were made aware of this matter Mr. Cesanek was not permitted on our grounds or at our events districtwide," the email said.

"We will continue to cooperate with the authorities throughout their investigation and are grateful for the work they are doing," the email continued.

The joint press release Wednesday said detectives from Evesham and the Burlington County Prosecutor's Office began looking into the allegations and Camden County and Haddon Township police joined the investigation when they determined that the alleged abuse happened in Cesanek's Haddon Township home.

Cesanek, originally from Ocean City, is being held at the Camden County Correctional Facility pending a pretrial detention hearing.

Anyone with information relevant to the case is asked to contact Burlington prosecutor's Detective Melvin Rogers at 609-265-5035 or Camden prosecutor's Detective Lateasha Jones at 856-225-8656.

Rebecca Everett may be reached at reverett@njadvancemedia.com. Follow her on Twitter @rebeccajeverett. Find NJ.com on Facebook.

Have a tip? Tell us. nj.com/tips