Here is the latest Iowa news from The Associated Press at 3:20 a.m. CDT

DES MOINES, Iowa (AP) — Gov. Kim Reynolds’ refusal to specify why she forced the head of the Iowa Department of Human Services to resign has prompted accusations that she’s violating a 2017 law requiring the state to disclose why it has fired employees or officials. Then Gov. Terry Branstad sought the bill, which Republicans included in a larger collective bargaining measure that reduced public worker union rights. But after asking DHS Director Jerry Foxhoven to resign, Reynolds has declined to specify the reason.

DES MOINES, Iowa (AP) — A state board has approved a measure expanding the number of medical conditions that can legally be treated by medical marijuana in Iowa. The Des Moines Register reports the Iowa Medical Cannabidiol Board voted Friday to allow those with chronic pain to have legal access to medical marijuana. The board denied allowing generalized anxiety disorder and opioid dependency as qualifying conditions.

OMAHA, Neb. (AP) — A former eastern Nebraska postmaster has been sentenced to probation for embezzling from the Fort Calhoun Post Office. Federal prosecutors say 54-year-old Steven Whitesel, of Council Bluffs, Iowa, was sentenced Friday in Omaha’s federal court to four years’ probation, 160 hours of community service and ordered to pay nearly $70,000 in restitution. Prosecutors say Whitesel submitted false mileage reimbursement requests to illegally collect nearly $70,000.

OMAHA, Neb. (AP) — Swarms of mayflies have emerged from under water along the Missouri River and are caking drivers’ windshields. The Omaha World-Herald reports mayflies spend 99% of their lives in water, but they rise above when they become winged adults to take part in a mating swarm. They quickly die after that. Dominator Fuel in Rock Port, Missouri, sold out of windshield wiper fluid in light of the mayflies’ arrival. Urban entomologist Jody Green says mayfly hatches are a yearly event.