Police released a sketch of the suspect Tuesday evening. He is described as a white male, around 40 years old, 5' 8" and 230 pounds. He was last seen wearing a light green windbreaker, jeans, work boots and a ball cap. He may be driving a light-colored pickup truck.
Victims include Rolando Alonso, 45, who was rehabbing the house near Beecher. Joshua Garza, 19, was shot in the head at the construction site and remains hospitalized at Advocate Christ Medical Center in Oak Lawn, Ill. A third construction worker who fled into nearby cornfields was not injured.
The third victim, 64-year-old Keith Dahl, was wounded in the shooting near his home in Lowell, Ind. Dahl's brother told ABC7 the farmer was shot five times and may not be able to use one of his arms. He is currently at St. Anthony Medical Center in Crown Point, Ind.
A spokesperson for the Lake County, Indiana, Sheriff's Department said that they are working hand in hand in this investigation with the Will County Sheriff's Department. That person said that people they have been getting flooded with phone calls with tips on the suspect.
Some of the schools in Indiana where the suspect was spotted Tuesday remained closed Wednesday.
Investigators are trying to track down hundreds of leads, but at this point, they haven't been able to track down the gunman.
"It's a sick world that we live in," said Bob Dahl, victim's brother.
Dahl says that is the only way he can explain what happened to his younger brother, Keith, who was one of the victims in the deadly series of shootings Tuesday.
"We listened to the news and every day, it seems like there are more kids being killed in Chicago, and it takes something like this to make you understand you're not immune to it," Dahl said.
While the search for the gunman continues, classes were canceled in Lowell out of safety concerns for the students.
"It was extremely scary for everyone around here, so we really worried about our kids yesterday," said Janet Vanderaa, parent.
A spokesperson for the Tri-Creek School District says they will notify parents Wednesday evening, but they plan to reopen schools Thursday and resume classes, but that is all subject to change, depending on whether the manhunt intensifies.