A 52-year-old man was shot and killed late Tuesday in Fairview Heights.
Police say they believe he was gunned down by a relative following an argument.
The shooting happened at about 10:30 p.m. in a home in the 100 block of Sheffield Court. The victim suffered a single gunshot wound and died from the wound, despite the efforts of the officer who arrived first at the scene to attempt to save his life.
The family member, whose identity has not been released by investigators, was taken into custody a short time later by Belleville police.
Fairview Heights detectives continued to investigate the case Wednesday morning. No charges had been issued as of Wednesday morning.