MICHAEL RUIZ: Mangione’s new argument to escape NY murder case: Same gun, same killing, same prosecution

Luigi Mangione’s lawyers are urging a New York judge to dismiss the state murder charges against him, arguing that continuing the case would amount to double jeopardy after his federal guilty plea over the killing of UnitedHealthcare chief executive Brian Thompson. The dispute matters because New York’s double jeopardy law can bar separate prosecutions when state and federal charges address the same harm.

The defence says Mangione was still prosecuted for federal firearms offences even though those charges were dismissed, and that stalking Thompson with intent to kill addressed the same core harm as murder. Manhattan prosecutors argue the federal stalking case involved distinct harms and that the state charges should proceed. Mangione pleaded guilty to two federal charges after initially facing additional counts; Thompson, 50, was shot outside a New York hotel.