Luigi Mangione diary sheds light on Brian Thompson's murder

Court documents are shedding new light on the murder of United Healthcare CEO Brian Thompson. New York state prosecutors say Luigi Mangione had a diary where he wrote about his plans to kill the healthcare executive months before Thompson was shot and killed in New York City.

The Brief

Court documents are shedding new light on the murder of United Healthcare CEO Brian Thompson.

New York state prosecutors say Luigi Mangione had a diary where he wrote about his plans to kill the healthcare executive, months before he was gunned down in New York City.

In Wednesday's 82-page filing, prosecutors justified adding terrorism to Mangione's first-degree murder charge.

Prosecutors say, to Mangione , Thompson and UnitedHealthcare were

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