Here is the latest Iowa news from The Associated Press

FORT DODGE, Iowa (AP) — Authorities say three people have been arrested in connection to a lockdown at a community college campus in Fort Dodge. The Fort Dodge Police Department says the three people each face one count of aiding and abetting second-degree robbery. Court records do not indicate formal charges have been filed. Authorities are looking for a fourth suspect. No shots and no injuries were reported.

DES MOINES, Iowa (AP) — An employee union is asking a court to overturn a ruling that bans state workers from wearing pins critical of Gov. Terry Branstad. The American Federation of State, County and Municipal Employees recently filed a motion asking the Polk County District Court to intervene in a ruling issued by the Public Employment Relations Board. The board ruled in October that the pins worn by employees at the Iowa Medical and Classification Center represent “special circumstances” that interfere with prison decorum.

DUNKERTON, Iowa (AP) — Residents and officials in Dunkerton are discussing whether they should retain their tiny police department following the chief’s resignation in August. Police Chief Tim Schultz resigned amid an investigation into the alleged misuse of a city credit card. His departure left Dunkerton with only one full-time officer. The job opening has raised the question whether Dunkerton should contract with the Black Hawk County Sheriff’s office for protection.

COUNCIL BLUFFS, Iowa (AP) — Officials say the number of human cases of West Nile virus in Iowa is down compared to last year. Iowa Department of Public Health officials say the state had 15 human cases of the mosquito-borne disease as of Oct. 31. There were a total of 44 human cases in the state in 2013.