The suspected CEO killer has reportedly received dozens of letters and emails as well as commissary deposits while in prison.

Luigi Mangione could soon be sharing space with some other infamous prisoners. Per Business Insider, Mangione, the lead

It was writings laid bare in a notebook found in Luigi Mangione’s possession, authorities say, that would help investigators build the federal case against him – a well-planned homicide that involved weeks of stalking the movements of his alleged victim,