Sean Grayson could face up to 20 years in prison for killing Massey, who had called 911 reporting a prowler.
Prosecutors said Massey was "hiding from an angry man with a gun," when she was shot after calling 911 for help.
Massey, who suffered from mental health problems, called 911 asking for help the night she was fatally shot.
The jury was selected for the trial on Monday. The 12-person jury is made up of nine women and three men. One juror is Black.
Sean Grayson, 31, a former deputy, has pleaded not guilty to three counts of first-degree murder.
The case is likely to rely heavily on body camera footage that captured what occurred in the early morning hours of July 6, 2024.
Bradley Lund suffered multiple blunt force injuries in the April 28 crash at YNOT After School Camp in Chatham, authorities said.
Sean Grayson, 30, has been charged with first-degree murder, aggravated battery with a firearm and official misconduct in Massey's death.
A former deputy's murder trial in the death of Sonya Massey was moved out of Springfield due to intense publicity, a judge ruled.
He threatened to have Obama assassinated, told Biden “your f****ed,” and threatened to have First Lady Jill Biden raped, police said.
Massey’s father, James Wilburn, described the possibility of the deputy's release as “a serious miscarriage of justice,” one paper reported.
Authorities are looking into "serious concerns about SCSO’s interactions with Black people and people with behavioral health disabilities."
Attorney General Kwame Raoul has created a Conviction Integrity Unit to investigate innocence claims from inmates.
Michael Egan, who retired as a sergeant the same day, is accused of driving drunk before colliding with a motorcycle.
Massey was killed inside her home by a deputy who had worked for six police agencies in four years and had been kicked out of the Army.
Several 911 calls were made from Massey's home days before her death, including her mother saying, "I don't want you guys to hurt her."
“I stand here today before you with arms wide open and I ask for your forgiveness," he said, weeks after one of his deputies killed Massey.
Sean Grayson was told he needed "high-stress decision-making classes" over a year before he shot Massey in the head.
A DUI-related ejection from the Army and six police jobs in four years should have raised serious questions when he was hired: Expert.
"The autopsy confirms what everybody already knows, that this was just a senseless, unnecessary, excessive use of force," attorney says.
Massey's shocking and violent death at the hands of a Springfield area sheriff’s deputy was captured on body camera.
He also pleaded guilty twice to driving under the influence, records show.
The video shows how a routine call turned tense and deadly in a matter of seconds.
Prosecutors say he yelled at the woman over the pot of water, then shot her before discouraging his partner from rendering medical help.
Sonya Massey was killed by police after calling 911 to report a prowler. Her death has sparked first-degree murder charges, protests.
State police said the 23-year-old is accused of claiming bombs were planted at the Illinois State Capitol and a public aid office building.
Michelle Bianco was last seen April 5, 2008, at her cousin’s home near where her remains were found, according to Crime Stoppers.
State police missions also resulted in 24 stolen vehicle arrests and the recovery of nine guns and 290 stolen cars, officials said.
A Sangamon County judge ruled the case can move forward against Peggy Finley and Peter Cadigan.
“They gave him no professionalism, no humanity,” said attorney Benjamin Crump, who called Earl Moore Jr.’s death “barbaric.”
The 35-year-old died of asphyxia less than an hour after being strapped to the stretcher, authorities said.
The 44-year-old from the Springfield area has been denied bail on the grounds that he is a threat to himself and others, court records said.
The former Springfield officer was tied to online comments that were racist, homophobic and antisemitic, according to reports.
The big cat strayed into residential and business areas, and posed an "imminent threat" to people and property, authorities said.
Three former Illinois prison guards face life behind bars in the 2018 beating death of inmate Larry Earvin.
Deidre Silas was a "hero, taken from us in the line of duty" Gov. Pritzker said Wednesday. A man is in custody, charged with her murder.
Officials said the man was shot by an officer Tuesday after he attempted to escape. Illinois State Police are investigating the incident.
Springfield police said the incident occurred Monday, the first day back to school for students in the area.
Police said a friend called 911 after finding the victims, sparking a homicide investigation.
A man suing Springfield police said officers spilled and tested his late daughter's ashes, claiming they were drugs.