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Needles, pins and other objects were found in bread, cheese and produce at the Oakridge Co-op. (CBC)

A Calgary woman who was convicted of putting sharp metal objects into food at a local grocery store has lost her second bid to get out of prison earlier.

Tatyana Granada was found guilty in 2012 of mischief and trespassing for putting needles, pins and other objects into bread, cheese and produce at the Oakridge Co-op.

She was sentenced to three years in prison.

In July, the Court of Appeal of Alberta upheld her conviction after rejecting the argument that the trial judge had erred when considering expert testimony.  

In a decision released Tuesday, the appellate court also dismissed Granada’s bid to have her sentence reduced to 18 months.