Man Threatens Mass Shooting At Lake Co. Courthouse: Police

LAKE COUNTY, IL — A 42-year-old man convicted in 2016 of making a terrorist threat directed at the courthouse in Lake County has again been arrested for threatening the courthouse.

Daniel B. Peterson, of the 200 block of East Cullerton Street in Chicago, has been charged with threatening a public official, which is a Class 3 felony, for allegations he recently gave a note to a security guard at a restaurant in Chicago that indicated there would be a mass shooting "with military precision" at the Lake County courthouse.

The note, which was given to a guard at a restaurant in the Chicago riverwalk area on June 14, also contained threatening remarks directed at a Lake County judge and Chicago police officer, who was assigned as a task force officer to the Federal Bureau of Investigation, according to a news release from the Lake County Sheriff's Office.

On June 27, the man returned to the Riverwalk area, and the security guard, who he initially passed the note to, spotted him, authorities said. The security guard contacted the Chicago Police Department.

Authorities took the man, who was identified as Pederson, into custody.

On Friday, members with the sheriff's office warrants team took custody of Peterson and transported him to the Lake County Jail, police said.

Additional charges are possible and the Lake County State's Attorney's Office intends to file a petition in Lake County Circuit Court to detain Pederson.