Here is the latest Iowa news from The Associated Press at 3:40 a.m. CST

KNOXVILLE, Iowa (AP) — An Iowa man who was found responsible for his mother’s death at a civil trial but acquitted at a murder trial is now suing criminal investigators and his father. Forty-seven-year-old Jason Carter filed a federal lawsuit Thursday accusing investigators of conducting a biased and incomplete investigation into his mother’s death. Carter’s father, Bill Carter, won a wrongful-death lawsuit against his son in 2017. The suit alleged that Jason fatally shot 68-year-old Shirley Carter in June 2015 to gain access to his parents’ assets. Jason Carter was ordered to pay $10 million to his mother’s estate. In March, a jury acquitted him of murder.

BURLINGTON, Iowa (AP) — On a winter day in Iowa, Democratic presidential candidate Bernie Sanders took some batting practice indoors. Representatives from three small-town Iowa teams looked on as the Vermont senator shed his suit jacket to take swings in a sweater over a dress shirt. He dribbled a few grounders, then lifted a ball in the air. The appearance was part of his effort opposing a Major League Baseball plan to cut 42 minor league teams after 2020. He’s defending clubs in far-flung places more fervently than any other candidate. That may allow him to win over baseball fans, a largely untapped 2020 constituency.

DES MOINES, Iowa (AP) — In Iowa, where nearly 17,000 residents work in the health insurance industry, candidates are facing questions about how their health care plans could affect jobs in the state. Des Moines is home to Wellmark Blue Cross Blue Shield’s health insurance headquarters. Some candidates have already faced questions about the issue on the campaign trail. This week, South Bend Mayor Pete Buttigieg went on the offensive. Referencing Sen. Bernie Sanders’ and Sen. Elizabeth Warren’s “Medicare for All” plans, he argued that some candidates’ health care plans would “eliminate the job of every single American working at every single insurance company in the country.”

DES MOINES, Iowa (AP) — The director of the Iowa Department of Transportation has announced his resignation after the governor asked him to step down. The Des Moines Register reports Mark Lowe will leave his position effective Jan. 10. Gov. Kim Reynolds’ office confirmed that she requested the resignation. The governor’s office says Reynolds appreciates his years of service and has decided to seek a change in leadership as she continues to build her administration. Reynolds appointed him director in 2017.