Police say the siblings have deep ties to a gang.
Chicago police have charged two men in the alleged murder of Dwyane Wade's cousin.
Darwin Sorells, 26, and Derren Sorells, 22, are being held without bail, according to police.
Nykea Aldridge, 32, was pushing a baby stroller on Friday when she was shot. Police say the mother of four was not the intended target of the shooting, and the baby in the stroller was not struck by the gunfire. According to law enforcement, the suspects were targeting a for-hire driver.
"This reprehensible act of violence is the example of why we need to change the way we treat habitual offenders in the city of Chicago," police Superintendent Eddie Johnson said. "When will enough be enough? This tragedy isn't just noteworthy because Ms. Aldridge has a famous family member. It's noteworthy because these two offenders are the prime examples of ... repeat gun offenders who don't care who they shoot."
“My cousin was killed today in Chicago. Another act of senseless gun violence," Wade tweeted on Friday. "Four kids lost their mom for NO REASON. Unreal. #EnoughIsEnough."
WATCH: NBA Star Dwyane Wade's Cousin Shot and Killed in Chicago, Donald Trump Ignites Twitter War