Adam Pitman, 24, of Keokuk has been found guilty of one count of 1st Degree Murder.
He was accused of choking his mother, Rosa Pitman, 46, to death in her home at 1602 Concert Street in Keokuk in the early morning hours of August 30, 2011.
An autopsy revealed Rosa Pitman died of asphyxiation due to a combination of strangulation and suffocation.
1st Degree Murder carries a maximum sentence of life in prison without the possibility of parole.
The jury of 7 men and 5 women received the case at about 3:15 Monday afternoon. They deliberated for about 60 minutes in a small room next to the second floor courtroom inside the South Lee County Courthouse.
Pitman's attorneys asked for the jury to be polled after Judge Cynthia Danielson read the verdict. All 12 members said they supported the conviction on 1st Degree Murder.
As the verdict was read, a family member of both Adam and Rosa Pitman yelled "Yes" from the audience.
Adam Pitman was secured and led out of the courtroom by members of the Lee County Sheriff's Office.
A date for sentencing has not been set.
Assistant County Attorney Bruce McDonald said, after hearing the verdict, that it is no fun being involved in a case where a young person will likely go to prison for the rest of their life.
"How do you feel when you put a 24-year-old away for life," asks McDonald. "It's not fun, but it was the right verdict."
McDonald added it is important to remember the victim, in this case Rosa Pitman, someone he says he knew.
McDonald felt the key piece of evidence in the case was a recorded interview between Adam Pitman and two agents with the Iowa Division of Criminal Investigation in Iowa City just hours after Rosa Pitman was killed.
Prior to the jury getting the case, the prosecution called a representative of the State Medical Examiner's office while the defense read the previous testimony of a psychiatrist from the University of Iowa Hospitals and Clinics into the record.