News OPP looking for suspect after knife attack in Gravenhurst SHARE ON: Patrick Grapes, staff Tuesday Jun. 12th, 2018 The OPP is investigating after a man was attacked with a knife in Gravenhurst. It happened at around 1:30am today in the driveway of a Peter Street home. The OPP says an unknown suspect went to the home and was met outside by the victim. The victim ended up with serious, but non-life threatening injuries and was taken to the hospital. The Emergency Response Team and a canine unit searched the area, but couldn’t find the suspect. If you have any information about this assault you’re asked to call the OPP at 1-888-310-1122 or Crime Stoppers at 1-800-222-TIPS (8477), or you can submit your information online at this website.