A Caddo woman has admitted her role in a deadly head-on crash on U.S. Highway 70 near Bennington that killed a 24-year-old Bonham woman and her unborn child, and left two others seriously injured.
Marissa Dill, 38, pleaded guilty Wednesday in federal court, closing the book on the criminal side of a collision that unfolded on May 5, 2025, inside the boundaries of the Choctaw Nation reservation. The guilty pleas resolve federal charges that followed a joint investigation by the FBI and the Oklahoma Highway Patrol.
Federal plea and charges
Dill entered guilty pleas to four counts: one count of involuntary manslaughter in Indian Country, one count of involuntary manslaughter of an unborn child in Indian Country, and two counts of assault resulting in serious bodily injury, according to KXII. Prosecutors say the indictment alleges Dill was under the influence of fentanyl when she veered into oncoming traffic and slammed into an SUV. The U.S. Attorney’s Office for the Eastern District of Oklahoma is prosecuting the case following the FBI and Oklahoma Highway Patrol investigation.
Crash details and victim identification
The collision happened around 7:15 p.m. on May 5, 2025, on U.S. Highway 70 near North 3980 Road, about five miles east of Bennington in Bryan County, according to KOCO. The Oklahoma Highway Patrol identified the woman who died as 24-year-old Olivia Rodriguez of Bonham. Rodriguez and her unborn son were pronounced dead at the scene.
Three other people were rushed to area hospitals in the aftermath, including a 2-year-old who was later admitted to OU Children’s Hospital, KOCO reported.
Bond and sentence exposure
Dill is currently free on bond under court-ordered conditions while she waits for the judge to decide her punishment. She faces between eight and ten years in prison on each count, according to KXII. A presentence investigation will be completed before the case returns to federal court for a sentencing hearing.
Legal context
Federal prosecutors note that involuntary manslaughter in Indian Country is no minor charge. Similar press releases from the Eastern District have stated that the offense may be punishable by up to eight years in prison and a $250,000 fine, according to a U.S. Attorney’s Office release. In Dill’s case, prosecutors will weigh the U.S. Sentencing Guidelines and any victim impact information before filing their official recommendation.
What’s next
A federal judge will set Dill’s sentence after the presentence report is completed. No sentencing date has been announced. The case remains under the jurisdiction of the U.S. Attorney’s Office for the Eastern District of Oklahoma and will move next to the sentencing phase in federal court.
