The Ottawa Police Service needs help to track down Lucas Nuttall.
Officials said his family is greatly concerned for his safety.
Nuttall is described as white, standing 6' (183 cm), 130 lbs (59 kg), with a slim build, short blond hair and blue eyes.
He was last seen in the downtown core.
Anyone with information regarding this investigation is asked to call Ottawa Police at 613-236-1222. If you have information that could assist investigators, but do not know where she is currently, please contact the Ottawa Police Service Missing Persons Unit at 613-236-1222, extension 2355.
Anonymous tips can be submitted by calling Crime Stoppers toll-free at 1-800-222-8477 (TIPS), or by downloading the Ottawa Police app.