The FBI and other law enforcement personnel responded to a man in the Dirksen lobby who walked into the courthouse armed with ...

A Chicago man is charged with pulling a knife in the lobby of the Dirksen U.S. Courthouse, leading to a 9-hour standoff.

CBS News Chicago witnessed the man being tackled by law enforcement and removed from the courthouse lobby on a stretcher.

CHICAGO (WLS) -- A standoff at the Dirksen Federal Building downtown Chicago ended after roughly nine hours Tuesday night.

A 38-year-old man is facing a felony charge after allegedly threatening to harm himself with a knife during a lengthy ...

The man held up a sign that read "call lawyer" during the lengthy standoff, which led to a mandatory evacuation. There were no reports of injuries, and there was no danger to the public, authorities ...

An FBI affidavit alleges that Mario Santoyo, 38, refused to follow law enforcement's commands when told to put down a knife ...

The Dirksen Federal Building and its surrounding streets are back open Wednesday morning after a knife-wielding man entered ...

A 38-year-old Chicago man faces federal charges after an hourslong stand-off earlier this week at the Dirksen Federal ...

Chicago’s federal courthouse is being evacuated as law enforcement negotiates with a person who entered the lobby with a ...

Following a nearly nine-hour lockdown for a man armed with a knife at one of the most secure federal facilities in Chicago, ...

CHICAGO ( WGN) – The man at the center of Tuesday’s standoff at the Dirksen Federal Building downtown has been charged. The ...