(Marshalltown, Iowa) – Officials with the Marshalltown Police Department report a man charged in another man’s murder, was convicted today (Monday, Feb. 19th), of Murder in the 1st Degree, a Class-A Felony. The verdict was handed-down in Marshall County District Court, against 21-year-old Amarrion Demeir Isom, after a trial that lasted just under a week.

Authorities say on March 17, 2023, at 4:03pm, law enforcement responded to 618 West Boone Street in Marshalltown, after receiving a 911 call reporting someone had been injured at this location and was not breathing. Upon arrival, officers found a 27-year-old male deceased. The victim was identified as 28-year-old Isaiah Montell Forest, of Marshalltown. On March 18, 2023, an autopsy of the victim was performed by the Iowa Office of the State Medical Examiner. The autopsy revealed the victim died as the result of a gunshot wound. On March 19, 2023, law enforcement arrested Isom, who was 20-years old at the time.

Amarrion Isom

Following Isom’s trial, Marshalltown Police Chief Michael Tupper stated, “Our thoughts remain with the family and friends of Isaiah Forest. This was a senseless crime. We are pleased with the jury verdict and we thank the jurors for their time and work. I am also thankful for the hard work of the law enforcement officers, detectives, prosecutors, and crime scene investigators involved in this case. These dedicated professionals work tirelessly to ensure violent criminals are brought to justice.”

The Iowa Division of Criminal Investigation, the Marshall County Attorney’s Office, and the Iowa Attorney General’s Office assisted with this investigation.