Published: Sep 28, 2010 3:50 PM EDT
Updated: Sep 28, 2010 12:50 PM EDT

MIAMI (AP) - Authorities are investigating the death of a man who was struck and killed by a car on a major Miami expressway after arguing with a taxi driver.

The Florida Highway Patrol says the unidentified passenger in the cab was involved in a fight with the driver early Tuesday morning while traveling on the Palmetto Expressway. The man then got out of the cab and was hit by another car.

No further information about the accident was immediately released. The taxi driver is cooperating with authorities.

The investigation caused early morning delays and backups on the expressway that stretched for miles in both directions.