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Do you have questions? Please visit our frequently asked questions page – FAQ.

Do you think you may have been witness to an incident under investigation by the SIU?  Please complete the Appeal for Witness form online.

You may also use the form below to contact us with your questions or comments. To help us serve you better, please indicate what your inquiry is about in the “Subject Line”

To contact us by mail or visit in person:

Special Investigations Unit
5090 Commerce Boulevard
Mississauga, Ontario
L4W 5M4

You may also contact the SIU by:

Toll-free phone: 1-800-787-8529
Local phone: 416-622-0SIU (0748)
Local Fax: 416-622-2455

The fields marked with an asterisk (*) are mandatory.