Police said they responded to a call of a burglary in progress in the 3600-block of Grandview Court at about 2:30 p.m.
"It's such a safe area. All of our children walk to and from school, and for something like this to happen, let alone in the middle of the day, is absolutely shocking to me," said LeAnne Conlon, neighbor.
Police said a 28-year-old male called to report the burglary and that he had been shot. He was taken to Delnor Hospital-Northwestern Medicine with a gunshot wound to the shoulder. Police said he was conscious and breathing, and his injury is not considered to be life-threatening.
Police said the victim is related to the homeowners and was housesitting at the time, police said. He was alone in the house at the time.
Neighbors described the family that lives in the home as long-time residents; an older couple with adult children who are all very nice.
"They were here before us, and I've been here 13 years. Wonderful people. Just quiet and to themselves," Conlon said.
The back door of the house was broken open, and shattered glass was visible on the back porch. Questions remain about why, or even if, the house was targeted.
The scene has been cordoned off during the ongoing investigation. Police said the suspect is still at large and believed to be armed, but they do not believe there is a danger to the public.
St. Charles North High School was briefly placed on soft lockdown due to police activity. City officials tweeted they had been given the all clear and the lockdown was lifted at about 4:15 p.m.
St. Charles School District has been given all clear. Delayed buses are leaving and the lock down at St. Charles North HS is lifted.— School District 303 (@StCharlesD303) October 26, 2017
Most students had already left, but after school practices were moved inside.