“Know that there are thousands of people wishing you luck,” read the note, which was “secreted” in cardboard that the pair of fresh socks were wrapped around, according to the filing.

But the accused killer — and heartthrob to his legions of warped fans — refused to wear the socks at the February hearing because he felt they “didn’t look good,” the court docs from the Manhattan District Attorney’s Office states.

A second hidden note was addressed to an unidentified “Joan,” said the filing, released Wednesday.

The Manhattan DA’s Office pushed back on Mangione’s claims of unfair treatment — noting he’s actually getting “special treatment” by being allowed to change out of jail garb for his court appearances.

Prosecutors warned that future contraband smuggled into the alleged murderer’s clothing could put court officers at risk.

“Fortunately, the items smuggled were handwritten notes and not contraband capable of harming the transporting officers,” the filing reads.

Mangione’s decision to go sockless with bare ankles sent his thirsty fans into a frenzy.

He has pleaded not guilty to charges that he killed UnitedHealthcare CEO Brian Thompson in cold blood on a Midtown sidewalk.

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