A youth worker at an afterschool program in Toronto's east-end has been arrested and charged in connection with a sexual assault investigation.

Toronto police said on Thursday that the suspect was a youth program co-ordinator at Joseph Brant Senior Public School, near Lawrence Avenue East and Morningside Avenue.

Joseph Brant Senior Public School is a middle years' school for students in Grades 7 and 8.

Police launched an investigation in early May and allege a student was assaulted while participating in the afterschool program.

Shari Schwartz-Mattz, a manager with the Toronto District School Board, said that the person who had been charged would remain away from the school pending the outcome of an investigation.

Schwartz-Mattz said the person was a contract worker with the Toronto Foundation for Student Success and not technically an employee of the school board.

Const. Wendy Drummond said the suspect was previously known to police.

Louis McRae, 32, of Toronto, was arrested on Tuesday and charged with three counts of sexual assault, two counts of sexual interference and one count of invitation to sexual touching.

He is scheduled to appear in court at 1911 Eglinton Ave. E. on Friday, June 10.

Police say there may be more victims and ask anyone with information to contact police at 416-808-4300 or Crime Stoppers anonymously at 416-222-TIPS (8477).