Officers stopped the man, frisked him and found something that
appeared to be a pipe bomb.
They called the department's bomb squad and blocked off traffic on Laramie between Addison and Eddy.
An officer on the scene said the man, who speaks Polish, wanted to kill his boss. It was not immediately clear where he worked, or where he was headed when officers stopped him.
Police say the man will likely be charged with unlawful use of a weapon.