A published report claims Casey Anthony's security team had to scramble and rush her to a new location after someone taped taped a "death notice" to her front door.
The National Enquirer reports that someone discovered where Anthony had been saying in Florida and put a note on the door that said, "I know where you are, I'm coming to put a bullet through your brain."
A source told the tabloid, "Her bodyguards rushed her off in the middle of the night to another safe house a prearranged safe hideout that was available in the event of such an emergency.
"The fact she is still hidden and still alive is testimony to just how good her team of bodyguards are. They're the best, but it was a very close call."
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The report did not say exactly when this happened.
This is not the first death threat Anthony has received since she was acquitted of killing her daughter Caylee, but this was the seen as the most serious and immediate.
"There are plenty of people who want to kill Casey because they believe she got away with murdering little Caylee," the source said.