(CNN) A 50-year-old woman sabotaged Australian supermarket strawberries with sewing needles in an alleged act of workplace revenge, prosecutors told a Brisbane court Monday.

My Ut Trinh has been charged with seven counts of contamination of goods and faces up to 10 years in jail if convicted.

Trinh's arrest Sunday followed at least 100 reported cases of sewing needles or pins found in strawberries across the country earlier this year, sparking nationwide panic. Metal was also found in a banana, an apple and a mango , which the government believed to be isolated "copycat" cases or hoaxes.

Trinh is reportedly a former supervisor at the Berrylicious and Berry Obsession farm in Wamuran, north of Brisbane. Police will allege she felt mistreated by colleagues and had spoken to coworkers about taking revenge, according to CNN affiliate Nine News.

Lawyer withdraws bail application for 50 year old woman charged over strawberry contamination scare. Adjourned until Nov 22 @abcbrisbane — Ellie Sibson (@EllieSibson) November 12, 2018

The Queensland Strawberry Growers Association (QSGA) has welcomed Trinh's arrest, but called for copycat offenders to also face charges. The case against Trinh only relates to six or seven punnets of strawberries.

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