A Toronto math tutor and his fiancée were arrested Tuesday in connection with a case of gang sexual assault of a 14-year-old girl last year.

According to a released statement, the couple allegedly sexually assaulted the girl in the summer of 2014 at their North York home.

The man, a math tutor affiliated with seven Toronto-area public and private schools, had previously taught the victim for a number of years at a private tutoring company. His fiancée also volunteered at the same location.

The couple eventually befriended the girl and invited her over to their Lawrence Ave E. and The Donway East home several times leading up to the incident.

Kevin Chan, 32, and Kayla Drumonde, 23, have each been charged with one count of gang sexual assault and one count of sexual interference.

Police believe that there may be other victims because of the suspects’ connection with other schools.

Chan has been affiliated with the following schools:

Dr. Norman Bethune Collegiate from September 2000 to June 2001

Avondale Public School from September 2005 to November 2007

Willowdale Middle School from September 2008 to March 2009

Flemington Public School from March 2009 to June 2009

Light in the Attic Learning in 2011

Spirit of Math in Markham and Toronto from September 2011 to August 2014

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Mathnasium of Don Mills from November 2014 to present

Anyone with information is asked to call police at 416-808-7474, or Crime Stoppers at 416-222-8477 (TIPS).