UnitedHealthcare CEO murder suspect Luigi Mangione and his Manhattan prosecutor, Joel Seidemann.
Eduardo Munoz/Reuters, left; Richard Drew/AP, right.
- Manhattan DA Alvin Bragg has tapped Joel Seidemann to lead the Luigi Mangione prosecution.
- His 40-year career includes prosecuting the Etan Patz murder and Brooke Astor swindle cases.
- Colleagues say he's tenacious and detail-obsessed, with an expertise in fighting psych defenses.
Former colleagues say he's detail-obsessed and relentless.