CHICAGO (CBS) — A fourth suspect has been arrested in the shooting death of retired Chicago Fire Department Lieutenant Dwain Williams.

According to CPD Police Superintendent David Brown, the suspect was arrested on a separate warrant. The suspect is being held on a $2 million murder warrant by the FBI in Pennsylvania. The Chicago Police Department said it is awaiting the suspect’s extradition.

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The FBI said it did not have comment at this time on the matter.

On December 3, retired Chicago Fire Lieutenant Dwain Williams was shot and killed during a carjacking attempt in Morgan Park.

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(Credit: CBS)

Around 2 p.m., Williams, 65, was leaving the Let’s Get Poppin’ popcorn store at 11758 S. Western Ave. and was walking to his vehicle, when a four-door dark-colored sedan pulled up and four men got out and surrounded Williams, according to Chicago Police Chief of Operations Brian McDermott.

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