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UPDATE: Oklahoma City police say what they thought may have been a suspicious death was ruled a suicide.

OKLAHOMA CITY (KFOR) – An investigation is underway in northwest Oklahoma City after a person was found dead inside of a vehicle.

Police were called to the scene near N.W. 30th and Villa before 5:30 a.m. on Monday.

Authorities tell KFOR a citizen saw a truck with a back window shot out and someone dead inside.

Officials say they are investigating the death as a possible homicide.

The incident remains under investigation. No other details have been released.

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