Police say the suspect had a ghost gun, possibly made with a 3D printer, when he was arrested on Monday. Here's what to know about the increasingly widespread weapons and efforts to regulate them.

This is an image of the ghost gun recovered from Luigi Mangione ... by Mangione as the one used in the fatal shooting of UnitedHealthcare CEO Brian Thompson. Mangione faces a third-degree felony ...

Police said Luigi Mangione, the man charged in the killing of UnitedHealthcare CEO Brian Thompson, appears to have had a ghost gun, a weapon that can be made using a 3D printer.

The firearm found on the suspect in the murder of the UnitedHealthcare CEO is believed to have been an untraceable ghost gun, according to police.

The brazen killing of UnitedHealthcare’s CEO was likely carried out with a ghost gun, one of the nearly untraceable weapons that can be made a home, police said Monday. Ghost guns have ...

As the Pennsylvania House reconvenes this week, lawmakers will focus on regulating 3D-printed ghost guns.

The brazen killing of UnitedHealthcare’s CEO was likely carried out with a ghost gun, one of the nearly untraceable weapons that can be made at home, police said Monday. A ghost gun is a firearm ...

WASHINGTON (AP) — The brazen killing of UnitedHealthcare’s CEO was likely carried out with a ghost gun, one of the nearly untraceable weapons that can be made a home, police said Monday.

UnitedHealthcare CEO Was Likely Killed With a Ghost Gun That Can Be Made at Home WASHINGTON (AP) — The brazen killing of UnitedHealthcare’s CEO was likely carried out with a ghost gun ...