A New Jersey woman is accused of mailing more than 50 threatening letters to the U.S. Supreme Court and local officials, warning in one mailing "do not push my buttons ... lights out!!!"

"All of you Supreme Courts Judges will pay with death," said another letter, according to authorities.

Members of the FBI's Joint terrorism Task Force arrested 50-year-old Karen Waller at her home in Irvington on Tuesday.

Prosecutors say Waller mailed more than 50 threatening letters in May and June to the court, Rutgers University, Woodbridge town hall, Milburn police and an insurance company.

Authorities say the letters threatened to injure and kill people.

"Do not disregard this letter. Do not underestimate me period!!! ... Lights out!!!" said one letter sent to the town hall on June 4, forcing an evacuation of the building. It was signed "Karen," in script, authorities said.

Officials said one of the letters indicated the author could be reached at a phone number, which was a land line registered to Waller's house.

Waller is charged with one count of mailing threatening communications. She faces up to 10 years in prison and a $250,000 fine.

Attorney information was not immediately available.

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