SPRINGFIELD, Ill. (AP) — Illinois State Police investigators attempted to question at least six workers at Tamms Correctional Center on Tuesday in a criminal investigation of leaks of secret information.

One of those interviewed told The Associated Press the encounter lasted a few minutes and said “they were trying to intimidate me.” Gov. Pat Quinn, who wants to close the high-security Tamms lockups, said through a spokeswoman he did not order the investigation. The union representing prison employees called on the Democrat to “renounce these heavy-handed tactics.”