HOUSTON (AP) — A Houston police sergeant is hospitalized in critical but stable condition after authorities say his car was hit while he was working another traffic wreck.

Police say the sergeant was inside his car blocking traffic at the original accident scene early Sunday when a van slammed into him.

The van driver wasn't hurt but he was found to be intoxicated. He's in custody and awaiting charges.

The name of the officer hasn't been immediately released.

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