(Leroy) A Waupun man was charged Tuesday with injuring another motorist in a two-vehicle crash while being under the influence of a controlled substance. Nicholas Leser is facing a felony count of Operating While Intoxicated Causing Injury – Second Offense and felony Bail Jumping. Deputies were dispatched to State Highway 49 near Panzer Road in the Town of Leroy in February for the crash. Witnesses said a car traveling eastbound was rear-ended by another vehicle twice. The driver of that vehicle was reportedly identified as Leser. According to the criminal complaint, authorities recognized him because the 37-year-old was arrested the day before for OWI. Leser allegedly admitted to taking Percocet’s that day. The victim suffered a slipped disk and required neck surgery following the crash. If convicted, Leser faces up to 12-years in prison. An initial appearance is scheduled for May 17th.