Officials said a man shot three people, killing one, inside an Illinois motel on Sunday morning before he was found dead.
The identities of the victims and the suspect were not disclosed.
“Throughout the night we had some exchange of gunfire between police officers and the suspect,” O’Shea told the outlet.
When officers forced themselves into the room, the suspect was found dead, O'Shea added.
“It appears he died from a self-inflicted gunshot,” he said.
O'Shea said the two women who were injured are being treated at a nearby hospital with injuries that do not appear to be life-threatening.
The shooting appeared to stem from a domestic incident that happened prior, the police chief added.
None of the officers involved in the standoff were injured.