The parents of a missing York University student and Canadian reservist soldier are offering a $5,000 reward to anyone with information that helps find him.

It comes on the heels of another unsuccessful search to find him Sunday.

Shane Fair, 19, hasn't been seen since he attended a formal dinner and dance at the Atlantis Pavilion at Ontario Place last Saturday.

His family and friends had already searched for him unsuccessfully on Friday.

"This week has been pretty difficult. It's a mother's worst nightmare to have her son go missing and not have any news," says his mother, Lisa Malo, her voice shaking.

Malo says Fair normally checks in with her every couple of days so disappearing for this long is out of character.

"He's a great kid, he's aways done well in school, he's never been in any trouble, he's happy, he's got a ton of friends," says Malo.

"We really miss you so come back," she says. Thousands of people have already joined a Facebook group meant to help in the search.

Fair was last seen around 12:30 a.m. last Saturday. He and failed to board the bus from Ontario Place that would have taken him back to his residence at Calumet College at York.

The Toronto Police Marine Unit has already combed the waterfront but hasn't found any sign of him.

He is described as white, five-foot-eleven, 170 pounds and has brown hair styled in a short mohawk. He was wearing a blue suit with a blue shirt and blue tie when he went missing.

Anyone with information is asked to call Crime Stoppers at 416-222-TIPS.