Deputies investigate fatal I-4 accident in Polk Co.

Updated:

POLK COUNTY, Fla. - Polk County sheriff deputies are investigating a deadly accident that shut down a portion of Interstate 4 Wednesday night.

A spokesperson for the sheriff's office said the driver of a motorcycle tried to flee from deputies after they tried to pull him over Wednesday night.

The motorcyclist then crashed, and was killed, according to deputies.

The accident caused heavy back-ups for almost 10 miles.

Officials have not said exactly what caused the crash.