Here is the latest Iowa news from The Associated Press

CRESTON, Iowa (AP) — The manager of a fertilizer plant in southern Iowa says an employee has died following an explosion at the facility. Bill Clem, plant manager of Green Valley Chemical in Creston, says the explosion yesterday morning killed an employee and injured at least two people. Lee Freeman with the Creston Fire Department says officials responded to a medical call from the plant around 11 a.m. Thursday.

DES MOINES, Iowa (AP) — The Des Moines Water Works board has voted unanimously to sue three northern Iowa counties, holding them responsible for the high nitrate levels the in rivers the utility uses for source water. The five-member board says it will file a notice of intent to sue Calhoun, Buena Vista and Sac counties, who oversee 10 drainage districts.

MADISON, Wis. (AP) — Wisconsin Governor Scott Walker says he’s praying over whether to run for president in 2016 as he hires a senior adviser, plans a trip to Iowa in a couple weeks and expects to form an organization to raise and spend money. Walker says today that his hiring of experienced presidential adviser Rick Wiley doesn’t mean he’s decided to enter the race yet.