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Olga Maria Calderon, 32, was fatally stabbed at Walgreens in Wicker Park Sunday, Sept. 6. Credit: Google Maps/GoFundMe

WICKER PARK — A man has been charged with murder after police said he fatally stabbed a woman Sunday in a Wicker Park Walgreens.

Sincere Williams, 18, has been charged with first-degree murder, Area 5 Commander Eric Winstrom said during a Tuesday news conference.

Winstrom said Williams entered the Walgreens at 1372 N. Milwaukee Ave. to rob it and ended up killing Olga Maria Calderon, a 32-year-old mother. Williams is suspected of being involved in two recent robberies at Walgreens stores, including the one where Calderon was killed, Winstrom said.

Sincere Williams, 18, has been charged with first-degree murder. Credit: Provided

At 9:36 a.m. Sunday, Calderon was working inside the Walgreens when someone came into the store, walked up to her and stabbed her multiple times, officials said. 

“Just a young lady going to work, doing everything she’s supposed to do, raise a family,” said Chief of Detectives Brendan Deenihan.

Deenihan said detectives solved the case without any eyewitnesses, relying on camera footage and other technology and using a bloodhound to track Williams.

“This is extremely tragic, to have a woman go to work and not be able to come home to her child,” Deenihan said. 

Calderon was stacking shelves inside Walgreens when Williams grabbed her, Winstrom said. She tried to push Williams away and he stabbed her, Winstrom said. 

Detectives think Williams wanted to rob the store Sunday, but he didn’t take anything, Winstrom said.

Williams got rid of his clothes and knife in a nearby yard after Calderon was attacked, Winstrom said. He went to Northwestern Hospital for treatment for injuries to his hand.

Calderon was pronounced dead at the scene.

Williams was taken into custody at 12:15 p.m. Tuesday at his apartment in Old Town. 

RELATED: Suspect Being Questioned In Killing Of Wicker Park Walgreens Employee

A GoFundMe campaign created by Calderon’s sister, Andrea Calderon, has raised more than $35,000 as of Tuesday afternoon. GoFundMe proceeds will go toward Calderon’s funeral expenses and to support her husband, Israel, and her two children, an 11-year-old daughter and a 3-year-old son. 

Andrea Calderon wrote that her sister was “the world’s very best mom, a loving partner, a dedicated daughter, my big sister and so much more.” 

“Her entire existence revolved around her little family,” Andrea Calderon wrote.

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