After he was found to be mentally disabled, Johnson pleaded guilty to three counts of first degree murder and other charges and was sentenced to 100 years in prison.

[2] On November 17, Jairo Castorena-Mendez was leaving his sister's apartment to go to work when he saw Johnson, who was wearing a mask from the movie Scream standing near the doorway.

Nobody was hurt, but a man named Shamar Womack crashed and abandoned his car after being fired at.

[3] On December 18, Johnson robbed Carlos Lario at his Barrington Hills apartment and stole his wallet before fleeing.

Roughly 10 minutes after Lario was shot, Johnson fatally shot 50-year-old Joseph Bittengle, a University of Arkansas for Medical Sciences associate professor, who lived in the same apartment complex, in the stomach as he helped his 71-year-old mother, Hazel Bittengle, pack her car to return to her home in Ohio after a visit.

[1][4] On January 13, 2009, Johnson fatally shot 26-year-old Akshaya Nandam, who he thought was Hispanic, and 24-year-old Eric German on the same day.

Nandam, who'd moved to America from India four years earlier, had just dropped his girlfriend off at their apartment home and was walking outside when Johnson confronted him and demanded his wallet.

[2] It is not known what happened in the case of McCoy, but Womack served time in prison for aggravated robbery before being paroled.

[1] After consulting with the families of the victims, prosecutors reached a plea agreement with Johnson that called for a 100-year sentence with the possibility of parole for three counts of first degree murder and other charges.

Without the plea agreement, he would have faced a mandatory life sentence without parole on the capital murder charges.

[1] During Johnson's sentencing hearing in July 2010, Judge Marion Humphrey asked him why he committed the murders.

In the letter, which was addressed to his girlfriend, Johnson claimed he had committed the robberies to buy food and diapers for children.

The infractions include unexcused absences, disobeying orders, battery, possessing contraband, and sexual activity.