Yet another employee from the Cameron County Tax Assessor-Collectors office has been arrested in the undercover operation dubbed “Operation Dirty Deeds,” authorities said.

Marizol Sifuentes was arrested today at work by Texas Department of Public Safety Criminal Investigations Division, marking the sixth arrest for the office this year.

According to a news release from the DA’s office, Sifuentes is charged with breach of computer security and is being held at the Carrizales-Rucker Detention Center in Olmito.

Sifuentes had been employed by the tax assessor-collector’s office since 2000. She was based out of Cameron County Courthouse Administration Building in Brownsville

Earlier this year, Cameron County Tax Assessor-Collector Tony Yzaguirre Jr. was arrested along with county tax investigator Pedro Garza, dealer/notary supervisor Omar Sanchez-Paz and Chief of Investigations Lt. Jose Mireles as the result of a two-year Texas Department of Public Safety investigation of the operations of the tax assessor-collector’s office. Claudia Elisa Sanchez , who works at the assessor-collector’s office in San Benito, was arrested March 30.

A pre-trial hearing for Yzaguirre, Garza, Mireles and Sanchez-Paz is scheduled for Friday in the 103rd state district court before visiting Senior State District Judge Manuel Banales.