Megan Stammers, missing British teen, may be with 30-year-old teacher in France, authorities say

(CBS/AP) LONDON - The parents of a missing British schoolgirl believed to have run away with her teacher have issued a plea for her to come home.

PICTURES: Missing British teen may be with teacher

Authorities believe Megan Stammers, 15, is in France with 30-year-old Jeremy Forrest, a math teacher at the Bishop Bell C of E School in East Sussex.

Her mother, Danielle Wilson, issued an emotional appeal Monday in a televised press conference with police, begging her daughter to get in touch.

Police believe the teen left of her own accord but say they need to hear that she is safe, urging Forrest to make contact with authorities.

The alarm was raised Friday after Megan failed to turn up for school. Police believe she and Forrest took a ferry to France.