The Cook County Sheriff's Office released details on five recent criminal cases across the Chicago area. Here's what we know.

The Cook County Sheriff's Office has been a part of Illinois' enhanced CTA security plan and state-led task force dedicated to making it safe since the end of March. Their officers have worked more ...

New judge orders Tim O'Connell, 36, to be detained pre-trial in Cook County Jail after prosecutors argue on the third try.

A 39-year-old Chicago man is headed to prison for 11 years after sheriff's investigators say he slipped into virtual court hearings, posed as a defense attorney, and walked away with thousands of ...

The suspects were arrested and charged following an undercover drug bust near the South Loop corridor.

On Tuesday afternoon, five Cook County sheriff's police officers and a social service worker set off to patrol the West Side branch of the CTA's Green Line. The goal: To send a me ...

Illinois Cook County Sheriff investigators recovered $300,000 worth of copper wire and $1 million in other data center equipment from a truck yard.

Cook County Sheriff Tom Dart’s push to expand the network of automatic license plate readers under his control prompted hours of debate and opposition from county commissioners Wednesday concerned ...

The Cook County Sheriff's Office recovered $1.5 million worth of laptops when they found a trailer that had been stolen last week. Law enforcement said their Organized Retail Theft investigators were ...

Sheriff Tom Dart is personally leading a transit task force, required by the newly enacted sweeping transit law, that will decide early next year whether to recommend creating a unified police force ...