Replies(4) Garrett M. Kowalski, 25, of Des Plaines, surrendered himself on April 8 to Mount Prospect police. (Mount Prospect Police Department ) MOUNT PROSPECT, IL — An arrest has been made in a traffic crash that killed three people last month in Mount Prospect. Garrett M. Kowalski, 25, of the 500 block of N Third Avenue, Des Plaines, is accused of three felony counts of reckless homicide, three felony counts of aggravated driving under the influence of drugs and one felony count of possession of a controlled substance, according to a news release from the Mount Prospect Police Department. The charges stem from the traffic crash that took place March 7 on Rand Road (Route 12) and Mt. Prospect Road. Kowalski was driving a gold Ford Escape that struck a white Honda Accord, killing Des Plaines residents Francisco Flores Rodriguez, Georgina Perez Gomez and Francisco Javier Flores Perez, according to police.