Chicago man arrested 2 months after armed robbery of Southwest Side business

CHICAGO - A Chicago man has been arrested two months after allegedly taking part in an armed robbery at a Southwest Side business.

What we know:

Sonny Costello, 25, was taken into custody Thursday in the 3500 block of West Pershing Road in the Brighton Park neighborhood.

Sonny Costello | CPD

Police said Costello was one of the people involved in robbing a Garfield Ridge business in the 5800 block of South Archer Avenue on Jan. 17.

During the incident, a 44-year-old man and a 31-year-old man were held at gunpoint.

Costello is charged with six felony counts, including armed robbery with a firearm, aggravated robbery indicating a firearm, and robbery.

What we don't know:

It remains unclear how many people were involved in the robbery or if more arrests are expected.

What's next:

Costello was due in court for a detention hearing on Friday. No further information was immediately available.

The backstory:

Chicago police records show that in November 2025, Costello was arrested and charged with retail theft of merchandise valued at more than $300.