Updated 1/21/12 at 10:39 p.m.

CHICAGO (CBS) – A man was fatally shot Friday night at a River North Walgreens store, and a suspect wanted for the murder has taken his own life.

The body of Donte Simmons, 33, was found in an alley in the 100 block of Clyde Avenue, according to Evanston police and the Cook County Medical Examiner’s office.

Simmons was wanted by the Chicago Police Department for a homicide that occurred at a Walgreens at 315 W. Chicago Ave. in the River North neighborhood just before 10 p.m. Friday.

Troy Cameron, 22, was working security at the Walgreens Friday when Simmons, believed to be a former Walgreens employee, reportedly walked in and shot Cameron. He was found outside the store with multiple gun shot wounds, including one shot to the head.

Cameron might have returned fire before he died. A bullet was found lodged in the side of a CTA bus on Chicago Ave.

Walgreens spokesman Robert Elfinger said, “We are deeply saddened by this incident, and our thoughts and prayers are with our employees’ family.”

Elfinger said the company is providing information and “doing all we can to assist them.”

The Sun-Times Media Wire contributed to this report

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