MCSO: Suspect was on his way to kill Nancy Grace when arrested

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David Lee Simpson By Andrew Michalscheck David Lee Simpson By Andrew Michalscheck

PHOENIX -- The New York man accused of threatening CNN’s Nancy Grace and Jane Velez-Mitchell was on his way to kill Grace when he was taken into custody.

According to the Maricopa County Sheriff’s Office, David Lee Simpson told authorities on Wednesday night that he was driving to Georgia to put a knife between Grace’s legs and slice her to death.

The 48-year-old Simpson, who was booked into Maricopa County’s 4th Avenue Jail Wednesday, had reportedly become infatuated with convicted killer Jodi Arias during her murder trial.

Simpson was allegedly upset with Grace and Velez-Mitchell’s statements about the case and threatened them online.

Simpson was arrested while driving southbound in New York. Inside his vehicle authorities reportedly found guns, ammunition, police radios, cell phones, binoculars, and knives.

Simpson was extradited to Arizona on Wednesday, and while crossing the country he reportedly told authorities that he had placed three pipe bombs in a Pennsylvania river.

Authorities are now searching for those bombs.

“Like every threat, we took this one very seriously,” said Maricopa County Sheriff Joe Arpaio. “But I was especially concerned about this one because of the vulnerability of TV anchors and reporters who are so often in the public eye.”

Simpson has been indicted on three counts of computer tampering and two counts of stalking. He could also face additional charges.