Monique Leanna Mattar was last seen about 5:00 p.m. on April 20, 2009, in the Greenview neighbourhood in northeast Calgary. She was 44 at the time, about five feet six inches tall and 134 pounds, with brown eyes, shoulder-length black hair and a tribal tattoo on her lower back.

Reports say she may have been living a high-risk lifestyle around the time she disappeared, yet her absence was described as out of character and she has had no confirmed contact since that day. The Calgary Police Service Missing Persons Team keeps the case open and has publicly renewed appeals for information; investigators stress that even long-after details can surface as relationships change.

If anyone knew Monique, saw her in Greenview on April 20, 2009, or has information about her movements after that date, please share what you know with Calgary police.