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HOUSTON – There was a chain-reaction crash Monday night next to a fiery crash involving an HPD officer.

The incident happened along the North Freeway near Calvacade.

The first wreck happened on the feeder. The HPD officer managed to walk away from the fiery crash after colliding with an 18-wheeler.

The 18-wheeler jackknifed across Calvacade underneath the overpass. A witness said the big rig had a green light when the officer sped through the intersection with his lights on.

The officer and truck driver were taken to the hospital with minor injuries. The crash was under investigation.

The second accident happened on the feeder. Four cars were involved in a chain-reaction on the overpass. There were no reported injuries.

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