An Oklahoma police chief was reportedly killed by an officer in his department Sunday night while the two attended a conference together in Florida.

Lucky Miller, chief of the Mannford Police Department, died Sunday after a "physical altercation" with another Mannford police officer, authorities said. The other officer was identified in local reports as Michael Nealey.

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Online records from the Escambia County Jail in Pensacola, Fla., show Nealey, 49, was booked Monday morning on homicide charges.

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Fox News has reached out to the Mannford Police Department and Escambia County Sheriff's Office for further information.