Downers Grove Police Chief Robert A. Porter would like to alert our citizens to a recent increase in vandalism to vehicles. Over the past two weeks there have been eight incidents in which car tires were slashed during the overnight hours, predominantly in the northwest part of Downers Grove. All of the vandalized cars were parked on the street. The Police Department has increased patrols in the neighborhoods overnight. Chief Porter would like everyone to remember to remove cars from the street at night, and to report any suspicious people seen on the streets late at night by calling 911.