MADISON, Wis. -

The truck driver who caused a crash on June 4 that killed Al and Janet Studesville will not face criminal charges, according to David Green, a Texas district attorney.

Green said the crash investigation revealed the truck driver’s negligence did not rise to the level that would be considered criminal but that he is still civilly liable for the crash.

The truck driver, Anthony Dewayne Buck, told officers he dropped a piece of candy and when he reached down to grab it, there was a bang.

Investigators said when Buck reached down the truck drove over the center line and he collided with the Studesvilles.

There was no evidence that the truck driver was using any type of illegal substance or that he was speeding, Green said.

Besides working at Madison College, Al was a civil rights leader and, with Janet, owned the Just Nails salon in Fitchburg. Their son is Denver Broncos running back coach Eric Studesville.