On Monday, Baltimore County police officers blocked off an entrance to the property, which public records link to Luigi Mangione’s parents. Reporters and photographers gathered outside the entrance.

Accused killer Luigi Mangione celebrated his 27th birthday by sharing a list of the “27 Things I’m Grateful For” as he awaits ...

Mangione marked his 27th birthday with a list of "27 Things I'm Grateful For" that he sent to various people who have been writing to him in jail and that is now circulating online.

Prosecutors say, to Mangione, Thompson and UnitedHealthcare were symbols of the healthcare industry and what the 27-year-old considered a deadly greed-fueled cartel.