The kidnapping victim was freed after texting her location to a friend, who notified police.
The News-Sun in Waukegan, Ill., reports the arrests were made May 2 at a motel in the village of Beach Park along Lake Michigan.
Police say one of the suspects, Cristian De La O Hernandez, shot and killed one of two women he met at a Georgia nightclub. Police say he then drove off with the second woman, whom he sexually assaulted. Along the way, he picked up the second suspect, Jose Juarez-Vidales, and drove to Illinois.
The charges against Hernandez include murder and aggravated criminal sexual assault.
Juarez-Vidales is being held on a murder warrant.
Information from: The News Sun, http://www.suburbanchicagonews.com/newssun