Joseph Kardasz, 29, of the 3100 block of Southport is charged with armed home invasion and aggravated battery with a deadly weapon.
Police say Kardasz forced his way into the woman's home in the 1600 block of Wrightwood around 3:30AM on July 4th and said, "I'm going to kill [the new boyfriend] right in front of you!"
Prosecutors say Kardasz swung the small ax several times, striking the boyfriend on his hand and forearm, causing minor cuts and lacerations.
Investigators executed a search warrant at Kardasz's home on July 5, spending nearly six hours on-scene. According to the police report, Kardasz is an employee of the City of Chicago.