York Regional Police say they arrested 139 people and charged them with a combined 185 impaired-driving-related offences over a month-long period.

Police said the number of arrests and charges from April 15 to May 15 were “alarming.” Almost all of them were related to impairment from alcohol, but nine were related to drugs.

More than 100 of the arrests were made by R.I.D.E. officers doing spot checks or officers doing general patrols. Sixteen arrests were made after concerned residents dialed 911 when they saw an impaired driver.

Police said as well as being charged and arrested, drivers risk license suspensions for up to three days. During the month-long period, officers suspended 81 licenses.

“Impaired driving is the number one criminal cause of death in Canada,” a press release from York Regional Police states. “When you drink or use drugs and drive you not only risk your life and those of your passengers, but the lives of every other driver and pedestrian on the road.”