CHICAGO - Investigators are offering a reward of up to $50,000 for information related to two assaults on federal officers on Chicago’s Southwest Side on Saturday, one of which led to a woman being shot .

The FBI and Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) said the suspect in one of the incidents was still at large as of Monday.

What we know:

The first incident happened around 10:30 a.m. on Saturday in the 3900 block of South Kedzie Avenue, in which around 10 cars allegedly impeded and tried to box in U.S. Customs and Border Protection officers in their vehicle.

That led to the shooting of Marimar Martinez, 30, who was arrested and charged along with Anthony Ian Santos, 21 , with assaulting, impeding and interfering with federal law enforcement. A Department of

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