Browser Compatibility Notification
It appears you are trying to access this site using an outdated browser. As a result, parts of the site may not function properly for you. We recommend updating your browser to its most recent version at your earliest convenience.

Emergency? Call 9-1-1

Non-Emergency? Call 1 (866) 876-5423

Decrease Text Size Default Text Size Increase Text Size |
Print Link


Posted on Monday October 09, 2017

Investigators with the York Regional Police #1 District Criminal Investigations Bureau are seeking public assistance to locate a missing vulnerable man from the Town of Newmarket

On Monday, October 9, 2017, shortly before 5:30 p.m., York Regional Police received a report of a man missing from a residence in the area of Gorham Street and Leslie Street. Investigators have learned that the missing man, 55-year-old Shawn O’SULLIVAN, walked away from the residence around noon.  Shawn is a vulnerable person and is not familiar with the area. He may appear to be frightened and confused. Police are concerned for his wellbeing.


  • Shawn O’SULLIVAN
  • Male, white
  • 55 years
  • 5’5”
  • Short grey hair
  • Wearing a dark blue jacket, blue jeans and brown work boots

Anyone with information is asked to contact the #1 District Criminal Investigations Bureau at 1-866-876-5423, ext.7141, Crime Stoppers at 1-800-222-TIPS, leave an anonymous tip online at, or text your tip to CRIMES (274637) starting with the word YORK.