Here is the latest Iowa news from The Associated Press at 4:50 a.m. CST

DES MOINES, Iowa (AP) — Authorities are investigating a shooting in Des Moines that fatally wounded a 52-year-old man. The Des Moines Police Department and Des Moines Fire Department responded to the report of a shooting at about 11:20 p.m. Friday and arrived to find the man with a gunshot injury. Police said in a news release that despite lifesaving efforts at the scene and the hospital, he died at about 1:20 a.m. Saturday. This is the city’s first homicide of the year.

DES MOINES, Iowa (AP) — Authorities have identified 20-year-old Lily Macke of Grimes, Iowa, as the woman who died in a fatal collision between a car and a semi. The Polk County Sheriff’s Office said in a news release Saturday that Macke was driving a 2006 Nissan southbound on Highway 141 on Friday morning when her vehicle crossed the median and was struck by a northbound semi. She was pronounced dead a the scene. The driver of the semi was uninjured. The investigation into the accident continues.

DUBUQUE, Iowa (AP) — A 21-year-old Illinois man accused of stabbing his ex-girlfriend and leaving her body at an arboretum in Iowa has pleaded not guilty. Richard Forsythe, of Galena, Illinois, recently entered a written plea in Iowa District Court in Dubuque County. He is charged with first-degree murder in the death of 20-year-old Jennifer Lopez, of East Dubuque, Illinois. Her body was found Feb. 1 at the Dubuque Arboretum. Police say she was stabbed 15 times. Forsythe’s next court hearing is set for April 12.

DAVENPORT, Iowa (AP) — Police are searching for suspects after discovering a 14-year-old boy shot to death in a Davenport yard this week. The Quad-City Times reports that someone found the body of Jamon Winfrey on the ground Thursday afternoon and called police. Investigators believe the shooting happened a day earlier, when police were called to the area for a report of shots fired. Police believe that three vehicles were chasing after one another Wednesday afternoon, with shots fired from at least one of the vehicles. At the time, investigators found only shell casings in the area, but no damage or injuries. Now, police believe Winfrey was shot in the incident.