President Donald Trump speaks at the Nassau County Police Academy

Nassau County officials said people who live and work around the police training center should anticipate delays, traffic and closures throughout the area.

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Luigi Mangione expected to plead guilty in federal case in UnitedHealthcare killing, AP source says

The person, who was not authorized to talk publicly about the case and spoke to The Associated Press on the condition of anonymity, cautioned that Mangione could change his mind.