JACKSONVILLE, Fla- A Florida man has pleaded not guilty to murdering a teenager at a Jacksonville gas station on Friday night.

Police say 45-year-old Michael Dunn told them he felt threatened after arguing with  17-year-old  Jordan Davis over loud music coming from the student's SUV.

Three other teens were in the car.

Police say Dunn opened fire, hitting the teen twice.

Dunn was arrested at his home in Brevard County.

He arrived at the Duval County Jail on Tuesday afternoon.