Here is the latest Iowa news from The Associated Press…

DES MOINES, Iowa (AP) — An overnight freeze warning is in effect for central, south central and southeast Iowa and weather officials say minor snow could fall in the northwest part of the state. The system early Wednesday is expected to produce light rain across the southwest half of the state and possibly a dusting of snow to the northwest.

MASON CITY, Iowa (AP) — A Mason City man convicted in connection with his son’s death has had his request for a new trial rejected. The Globe Gazette reports that 30-year-old Kenneth L. Adams was convicted of child endangerment in the October 2012 death of his 18-month-old son. Prosecutors say Adams put the boy face down in a pillow, cutting off his breathing.

JEFFERSON, Iowa (AP) — Suspicious fires in a school bus and building in the central Iowa city of Jefferson are being investigated by the State Fire Marshal’s office. KCCI-TV reports that the bus that burned was in a school district parking lot where it had been locked. The other fire was in a 3½-story building being used to store tools. That structure was heavily damaged.

CARTER LAKE, Iowa (AP) — An Iowa official says there’s no easy solution or quick fix to a persistent algae problem at a lake in western Iowa. Chris Larson with the state Department of Natural Resources told the Carter Lake City Council that unusual weather conditions over the last three years have made it difficult to clean up Carter Lake. Larson said routine maintenance from the city’s mechanical harvesters may be the best long-term solution for the lake.

The Harlan Police Department reports three people were taken into custody last Friday, Oct. 18th, after a loud explosion was heard in the city. Officers were called to investigate the noise and a search warrant was issued for 1807 5th Street. Following the investigation, 25 year old Michael Hall, 47 year old Thomas Carney and 41 year old Pamela Frieze, all of Harlan, were arrested on numerous charges.

All three suspects were charged with possession of a controlled substance with intent to deliver, prohibited act penalties and possession of drug paraphernalia. Hall faces additional charges of possession of stolen property and reckless use of fire or explosives. Carney was also charged with possession of stolen property.

Also last Friday, 27 year old Steven Riley of Harlan was arrested following a traffic stop. Riley was arrested on an active Shelby County warrant stemming from an incident in July where he was charged with possession of a controlled substance and paraphernalia. As a result of the traffic stop, Riley was charged with driving while revoked, carrying weapons, prohibited acts, possession of a controlled substance with intent to deliver and possession of drug paraphernalia. He was taken to the Shelby County Jail.

The Harlan Police Department is investigating two separate thefts that took place over the past week. On Tuesday, October 15th, Jeron Henschied of Harlan reported his 1998 Buick Park Avenue was stolen from a parking lot at 6th and Hill. This past Monday, Randy Davis of Harlan reported a cement deer lawn ornament was taken from his residence in the 500 block of 5th Street. Both cases remain under investigation.

Sheriff’s officials in Audubon County say no injuries were reported following a two vehicle accident that took place about seven-miles southeast of Audubon Tuesday afternoon. Authorities say an SUV driven by 64 year old Gary Lee Borkowski of Carroll was traveling north on County Road N-36 at the same time a car driven by 30 year old Nicholas Brooks Peck of Audubon, was traveling westbound on 220th Street.

The vehicles collided when at the intersection when Peck failed to yield from the stop sign.  The accident took place around 12:50pm. Damage from the crash amounted to $4,000. Peck was charged with failure to yield.

Two fires that took place Monday night in Jefferson are being investigated as cases of arson. Authorities told Raccoon Valley Radio, a fire destroyed a Greene County School bus parked at the bus barn on the fairgrounds in Jefferson, at around 8:45pm. Three-hours later, a structure fire damaged a four-story concrete storage building in the 700 block of North Elm Street, in Jefferson.

There were no injuries reported. An investigator with the State Fire Marshall’s Office was expected to in Jefferson to determine how both fires started, but officials say the preliminary causes are suspected to be arson-related.