An elementary school teacher in Langley, B.C., has been charged with sexual assault and sexual interference of one of her former students.

Deborah Ralph, 57, allegedly assaulted a male student between December 1998 and June 2001.

The alleged victim contacted Langley RCMP on Nov. 8 to report he had been sexually assaulted by Ralph while studying at the James Kennedy Elementary School. He once was her student, but alleges he was assaulted when she was no longer his teacher.

Ralph taught at the school from September 1987 to June 2010.

"These allegations are extremely serious in nature, and the Langley RCMP Serious Crime Unit launched an investigation as soon as the matter was brought to our attention,” said Supt. Derek Cooke.

Ralph was arrested on Nov. 9 and released with conditions the following day. She is prohibited from having contact with the alleged victim, certain former students and anyone under 16.

Investigators are now trying to determine if there may be any further victims and have already conducted interviews.

Ralph most recently taught at Langley Fundamental Elementary School, from September 2010 until she was removed from her teaching duties on Nov. 9 after the Langley School District was made aware of the alleged assault.

Parents who suspect their child may have been victimized are asked to contact the Langley RCMP immediately.