It happened shortly before noon Friday morning at the Associated Bank, 10910 N. Main Street, in Richmond, Illinois.
The FBI says its agents confronted three suspects leaving the bank. Shots were fired.
- PHOTOS: Images from the scene
According to the FBI, agents were at the bank because of prior knowledge something was going to happen -- and were able to intercept the suspects before they entered the bank.
"Our agents today at about 11:30 a.m. had an encounter with some individuals who were the subject of an ongoing investigation based out of our Chicago office. In the course of that interaction there were shots fired, there were three suspects present. two were taken into custody, one did sustain gunshot wounds, and those wounds were fatal," said FBI Special Agent Joan Hyde.
Chopper 7 HD showed what appeared to be the suspects' vehicle after it had crashed into a light pole, and the alleged offender who was killed inside.
"I look across the street, and there's a guy slumped over on his front, I guess you would say. He didn't look like he was moving," said Ben Thiemeyer, who works nearby.
Employees at the busy commercial area reported hearing what sounded like multiple rounds of automatic gunfire. "From what I understand, it was over pretty quickly which I'm pretty happy about and grateful, especially since we live so close to the commercial area here," said resident Catherine Hewlett.
Earlier in the day, Richmond-Burton High school was placed on lockdown, but students have since been let out. However, Main Street in Richmond remains closed.
Associated Bank confirmed that no employees or customers were injured, and that they were cooperating with authorities in the investigation.
The FBI is releasing little information about the suspects, only to say they were the subject of an ongoing investigation.
The license plate on the suspects' vehicle was listed to an owner who lives in chicago's hyde park neighborhood, but that resident told abc 7 the plate had recently been stolen.
Back in Richmond, many are still shaking their heads.
"Hearing about this was pretty scary. And knowing people are like this in the world, it was weird," said resident Janae Hewlett.