Longueuil police are asking the public for help in tracking down an 18-year-old woman missing for nearly three weeks.

Silvia Rodrigues-Falcon left her home in Brossard on Sept. 20 and hasn't been seen or heard from since.

Silvia is white, with long blonde hair and brown eyes. She is 5 foot 4, and weighs 110 lbs.

She has a tattoo on her lower back that reads "Who is your daddy?" and a Chinese symbol on the back of her neck.

She regularly spends time in Montreal and Laval.

Anyone with information is asked to call 9-1-1 or 450-463-7211.