Canadian pop star Justin Bieber left behind more than screaming fans on a recent visit to Winnipeg.

The Biebs gave a personally signed guitar to City of Winnipeg staffer Kenny Boyce who, as manager of the film and special events office, often works with visiting celebrities.

Boyce promptly donated the guitar to the Winnipeg Harvest food bank, which is auctioning it off to raise cash.

During an interview on The Tonight Show with Jay Leno two weeks ago, Bieber spoke about relying on a food bank as a child.

He said his mother used to get food from The House of Blessing, a food bank in Stratford, Ont., where he grew up. He also spent part of his childhood in Winnipeg, where his father lived.

Money raised from Bieber's new Christmas album, Under the Mistletoe, will be donated to various charities and food banks across the country.

Winnipeg Harvest director David Northcott said it's nice to see that Bieber hasn't lost touch with his life before stardom.

"Here's a high-profile person who has not forgotten his roots. He still remembers, he's not in the trappings of Hollywood, but he's still got that sense of trying to put back into the community," Northcott said.

Bieber came to Winnipeg to watch his girlfriend, Selena Gomez, perform in a concert at the MTS Centre.

Bids on the Beiber guitar can be placed online.