The ongoing manhunt for the masked killer who assassinated UnitedHealthcare CEO Brian Thompson on December 4 has reportedly hit a roadblock, despite the police having found several pieces of evidence. Knewz.com has learned that law enforcement officials have been successful in tracking down the hostel in the Upper West Side, New York, where the killer had been staying before murdering the health insurance executive. Security footage from the hostel purportedly showed the murder suspect, and the