By Caroline Lowe, WCCO-TV

ST. JOSEPH, Minn. (WCCO) — It’s been more than 21 years since 11-year-old Jacob Wetterling disappeared without a trace in St. Joseph as he biked home with his brother and best friend.

READ MORE: PHOTO: U Of M Alerts Students To Person Taking Pictures In Showers

Today marks Jacob’s 33rd birthday, another birthday when his family has no idea what happened to him.

READ MORE: Protesters Demonstrate Against 'Unethically High' Drug Prices Outside UnitedHealthcare Corporate Offices

There was some brief hope they might finally get some answers last summer when investigators spent two days digging on a farm near the spot where Jacob was abducted at gunpoint.

Sadly, that search soon turned into just another setback in this high-profile case since the items seized produced no evidence to help solve this mystery that has haunted our community for more than two decades.

MORE NEWS: Bemidji Police Asking For Public's Help Locating Missing Teeen, Sian-Rose Tappo

Please keep Jacob’s family in your thoughts today as they mark his birthday without him. Birthdays are also frequently significant dates to killers and one can only hope this day is weighing on his mind or someone who knows him and they come forward to law enforcement with information to finally solve this mystery.