A Pennsylvania woman who accidentally hired a cop to kill her daughter's ex-boyfriend, his sister and his sister's boyfriend has been arrested, the Daily News reported on Wednesday.

Denise Marie Nagrodoski, 52, met with the undercover cop who she thought was a hit man on Tuesday. The man was actually a detective with the New Jersey State Police, Attorney General John Hoffman said.

The woman claims that her daughter's ex was abusive and led to the girl's miscarriage of twins, according to Hoffman. In addition to the boyfriend, she always wanted his sister and her boyfriend eliminated.

When she met with the undercover cop, she made two payments of $500 and told him to shoot each victim in the head twice, "one for each twin," the statement said. She then told the man to "bash in" their heads and burn their house down after she wasn't able to get a gun.

Specifically for the ex-boyfriend, Nagrodoski wanted the detective to tell him that she was responsible for his death, ABC reported.

"Nagrodski thought she had taken every step necessary to translate her personal vendetta into murder, plotting horrific violence against not only her daughter's ex-boyfriend, but also two of the people closest to him," Hoffman said. "Fortunately, the New Jersey State Police worked swiftly and expertly to expose her plot and prevent anyone from being killed."

Nagrodski has been charged with three counts of first-degree conspiracy to commit murder, three counts of first-degree attempted murder, one count of fourth-degree attempt to tamper with or fabricate physical evidence, one count of second-degree conspiracy to commit aggravated arson and one count of fourth-degree attempt to tamper with or fabricate physical evidence.