Luigi Mangione expressed concern for the Pennsylvania McDonald’s worker who made the 911 call about the alleged assassin’s location, warning that it “wouldn’t be good for her” if the worker’s information was made public.

Mangione’s first words after federal agents apprehended him for allegedly murdering United Healthcare CEO Brian Thompson was a sign of remorse for inconveniencing the public during his detainment, according to a letter sent by his legal team Wednesday.

“I apologize for the inconvenience of the day,” Mangione reportedly uttered, according to his lawyers in court docs viewed by The Post.

The 26-year-old had asked his public defender if the name of the McDonald’s employee would be released as he seemingly feared his supporters would go after the worker.

“They aren’t going to put the cashier from cashier from McDonald’s information out there, are they?” Mangione asked. “It wouldn’t be good for her. A lot of people would be upset I was arrested.”

Mangione’s defense team is using his first post-arrest statements to argue he is innocent in the December 4 killing of the UnitedHealthcare executive.

“This is the very opposite of someone who is seeking to terrorize anyone or wishing harm or violence to anyone,” the letter to Manhattan Supreme Court Judge Greggory Carro noted.

Prosecutors accused Mangione of leading a campaign of “harassment, backlash and death threats” towards certain people but his legal team argued against the charges.

“There is simply no evidence that Mr. Mangione is responsible for any of these threats, directly, indirectly or in any manner. Mr. Mangione has been nothing but cooperative, peaceful and has shown concern for others,” wrote the team of counselors consisting of Karen Friedman Agnifilo, Marc Agnifilo and Jacob Kaplan.

Mangione’s hope for civilized respect towards the cashier was ignored as the employee was the target of tasteless attacks.

“To the stupid b–h that ratted out my baby Luigi Mangione…you will be dealt with,” one crazed Mangione supporter wrote after his arrest.

The eagle-eyed worker recognized Mangione from surveillance images shared by police while the alleged killer chowed down on corporate fast food in the store’s dining room.

The store was the target of a “review bombing” campaign after Mangione’s arrest.

One-star reviews and negative comments aimed at Altoona McDonald’s were quickly removed by Google, as the hate campaign went against the search engine giant’s policies.

One fanatical follower of the Ivy League graduate wrote a message of support in a heart-shaped piece letter, hiding the note in a pair of socks gifted to Mangione.

“Luigi, we are rooting for you! Keep your head held high and know there are thousands of people wishing you luck,” the note read.

The legal team had asked Judge Carro and the prosecution for additional time to file their motion to answer several items asked by the court in relation to the case.

They also requested that Mangione be provided a laptop while being held at the Metropolitan Detention Center so he can help prepare for his defense.

The device would be doctored to rid access to the internet, games and anything else not related to documents pertaining to the case.

It would be used solely for viewing case evidence like videos, photos and 15,000 pages of records, the request stated.