Blackwell is charged with the second-degree murder of Megan Dail in an auto accident six years ago.
Greg Dail took the stand Tuesday, telling jurors what happened the day he lost his 4-year-old daughter in the accident.
Police said Blackwell was under the influence of drugs and alcohol when his pickup truck collided with the Dails' minivan, killing Megan. Greg Dail testified Tuesday that moments after the accident, he went to Megan and stayed by her side until paramedics arrived at the scene.
"The thing I remember the most is hollering a lot for Megan," Dail said. "We kind of knew at that point that she was dead."
Greg Dail also showed jurors the injuries his sons, Austin and Josh, suffered as a result of the accident.
The prosecution wrapped up its case Tuesday morning. The defense announced late Tuesday afternoon that they would not put anyone on the stand to testify in his defense.
If convicted, Blackwell faces up to 30 years in jail.
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