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Charles Leto, 55, appeared in First Appearance Court on Sunday on one count each of first-degree murder, attempted first-degree murder, aggravated battery, and aggravated discharge of a firearm.
The 14-year-old boy was shot in the neck. The second victim, a male of an unknown age, was shot in the back.
Sources said roofers were working on the roof of the building when something went wrong.
Warnings have been issued for Lake and McHenry counties in Illinois and Lake and Porter counties in Indiana.
On Thursday afternoon, a plaque dedicated to Harris was unveiled at the entrance to the garden, located near the south end of Belmont Harbor.
The fan, Dominic Osmund, told CBS Chicago that he was removed after he joined a group flying Palestinian flags.
Chicago police Supt. Larry Snelling said the top priority this year for the Pride Parade is the heat.
The Lake County Coroner's office confirmed five bodies were recovered from the crash site.
Climbing the stairs to the top of the former John Hancock Center is a feat unto itself, but Laura Valentine did it just months after undergoing a very complicated double organ transplant.
The victim suffered a puncture wound to the thigh, and was taken to Advocate Lutheran General Hospital in Park Ridge, where he died, police said.
The victims were on a walkway in the park when they were all shot by an unknown person, police said.
Essengue has the ability to run the court and attack off the dribble, averaging 12.4 points and 5.3 rebounds in Germany this season.
The Schaumburg Park District said as of Wednesday, it was still working to restore critical systems and ensure the facility is safe.
CBS News Chicago has reported extensively on Gast Monuments, after several families said the company never delivered the headstones for which they paid.
Adam Gerber was taken to an area hospital by Arlington Heights Fire Department paramedics, and his family was notified and reunited with him.