03/25/2012 05:17 EDT | Updated 05/25/2012 05:12 EDT

Michael Dunahee composite sketch issued

The family of Michael Dunahee, who disappeared more than 21 years ago in one of B.C.'s most infamous missing child cases, has issued a new, age-enhanced image of their son.

The new picture is an estimate of what Dunahee would look like as a 26-year-old man, more than two decades after he vanished without a trace from the playground of Victoria's Blanshard Elementary School.

He was last seen on March 4, 1991, wearing a blue-hooded jacket with red lining and red cuffs, a Teenage Mutant Ninja Turtles T-shirt, multi-coloured rugby pants and blue sneakers.

Michael's parents, Crystal and Bruce Dunahee, have never given up hope of finding their son and last year launched a website,, containing photos and video of Michael and a link to submit tips.

After the four-year-old disappeared, police conducted one of the largest searches for a missing child in Canadian history and Dunahee's parents helped put in place the Amber Alert system now used for missing children.

But despite more than 10,000 tips, police are no closer to solving the case, which remains active.