A Streetsboro man was convicted Tuesday of killing an Akron resident in an argument that turned deadly over a stolen dirt bike that was posted for sale on social media.

According to the Summit County Prosecutor's Office, 64-year-old William Knight was found guilty of two counts of murder and two counts of felonious assault. Each of the charges carries a gun specification.

Knight was convicted of the murder of 24-year-old Keith Johnson.

On March 20, 2017, Knight, his daughter and his son-in-law went to Johnson's home to confront him about their stolen dirt bike, which they had seen for sale on social media. The dirt bike had been reported stolen in February 2016.

When Johnson tried to drive away on the dirt bike during the confrontation, Knight's son-in-law grabbed the bike to stop him from leaving. Johnson managed to pull away but Knight shot him in the head, authorities said. A friend of Johnson later told News 5 the 24-year-old had purchased the bike from a neighbor and didn't steal it.

During the trial, Knight's attorney argued he had acted in self-defense and was protecting his family. The jury rejected the argument.

Knight is scheduled to appear in court on April 23 for sentencing. He is facing the possibility of life in prison.