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Louisiana State Police are investigating an officer-involved shooting on Interstate 10 on Sunday, when West Baton Rouge sheriff's deputies shot and killed a man attacking a worker with the state Department of Transportation and Development.

The worker with the DOTD's Motorist Assistance Patrol was fatally injured in the attack, which happened at about noon on Sunday near the La. 415 exit, the State Police said.

West Baton Rouge Sheriff's deputies responding to a 911 call about the attack found it underway and fired their weapons at the suspect, the State Police said. 

Both the DOTD worker and the suspect were transported to the hospital, where both were pronounced dead shortly after their arrival.

The investigation remains ongoing.

Both lanes of I-10 west past La. 415 were blocked for several hours Sunday following the incident, with the left lane open by 4 p.m., and congestion remaining at the I-10/I-12 split.

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