Here is the latest Iowa news from The Associated Press at 5:40 a.m. CST

KNOXVILLE, Iowa (AP) — A Marion County jury has said a 45-year-old man is responsible for the 2015 shooting death of his mother and that he must pay $10 million to her estate. The Des Moines Register reports the verdict came Friday in the bizarre civil case in which a father and son accused each other of the killing. Nobody has been charged in 68-year-old Shirley Carter’s death.

DES MOINES, Iowa (AP) — Iowa officials are warning that state income tax refunds will be delayed in 2018. The Des Moines Register reports that Iowa Department of Revenue Director Courtney Kay-Decker says the refund delays are a result of her agency doubling down on fraud prevention efforts. Kay-Decker says her agency stopped nearly 10,500 erroneous refunds from being processed this year through Nov. 12. Those refunds accounted for more than $17 million.

CLEAR LAKE, Iowa (AP) — Some northern Iowa residents are seeking state approval to keep a popular dock at a state park amid revised rules that limit dock lengths. The Globe Gazette reports that the future of the Sunset Bay dock northeast of Clear Lake State Park remains uncertain due to its 496-foot length. The Iowa Department of Natural Resources capped commercial dock lengths at 300 feet from the water’s edge under revised regulations in 2008.

VERSAILLES, Mo. (AP) — A Missouri state trooper convicted of a misdemeanor for the drowning death of a handcuffed Iowa man has been fired. The Kansas City Star reports that that a Missouri State Highway Patrol spokesman confirmed Anthony Piercy was fired Friday, more than 3 1/2 years after 20-year-old Brandon Ellingson, of Clive, Iowa, drowned in the Lake of the Ozarks.