The judge presiding over the case of a woman who stuck pins and nails into food products at a Co-op store found she felt no remorse over the incident.

The judge sentenced her to three years in prison and a five year long weapons prohibition.

Tatyana Granada was found guility of mischief and trespassing two months ago, but with time already served, she'll spend another 33 months behind bars.

The 45 year old woman represented herself at her sentencing hearing after her lawyer removed himself from the case.

A psychiatric report on Granada showed that she displayed prominent traits of a narcissistic personality disorder and she showed no remorse and protested her innocence of the incident right up to the end.

The woman tampered with food products between January and March 2010, after she was banned from the store because of shoplifting on an earlier occasion.