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

CHEROKEE, Iowa (AP) — Businesses in northwest Iowa are getting a boost when construction workers building the Dakota Access oil pipeline arrive in town. Local officials have noticed an increase in activity at hotels and restaurants near the oil pipeline. It’s hard to quantify the economic benefit to communities, but local businesses have noticed the increase in sales.

DES MOINES, Iowa (AP) — Iowa school districts are holding more than $145 million in their accounts, but superintendents say restrictions on that money is making it hard to spend. The Des Moines Register reports the money in dozens of different funds has grown since 2013 when the total was about $130 million, so school officials are lobbying for more flexibility.

DES MOINES, Iowa (AP) — Number of flood insurance policies sold in Iowa declines 22 percent in recent years to 13,872, but the reason for the decline wasn’t immediately clear. Officials say some homeowners may have dropped coverage when premiums increased, and people who paid off their homes might have dropped the insurance. Buyouts of homes in flood-prone areas may have also contributed to the declining number of policies.

CORALVILLE, Iowa (AP) — Labor union officials are criticizing staffing levels at Iowa Medical and Classification Center prison, but the state defends its hiring and says prison is filling its vacancies. Union president Danny Homan says the reduced staffing contributed to a recent incident where four inmates tested positive for methamphetamine.