A 55 year old Toronto man is facing 18 charges in all, in a sexual assault investigation.
It was between September of 2011 and this month, that police claim Muhiuddin Ahmad first showed pornographic images to young boys, and then sexually assaulted them.
Cops say all of the known incidents happened in the building where Ahmad lived.
He's been charged with two counts of making sexually explicit material available to a child under 14, two counts of making sexually explicit material available to a person under 14, one count of invitation to sexual touching, six counts of sexual assault, six counts of sexual interference and one count of forcible confinement.
The big fear here, is that Police believe there could be more victims.