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ROCKWALL (CBSDFW) – A man died after being struck by a vehicle in Rockwall early Tuesday, police say.

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Rockwall officers responded to the 900 block of the South Service Road of IH 30 around 12:20 in the morning and found two pedestrians that had been hit after walking in the roadway.

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One person, a 48-year-old male from Knoxville, Tennesse, was pronounced dead at the scene. The other victim was transported to a local hospital in critical condition.

Authorities say the driver of the vehicle remained on the scene and is cooperating with the investigators.

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The accident is under investigation by the Rockwall Police Department Traffic Division.