According to police, the suspects in their 20s forced a 52-year-old female victim off of a CTA Blue Line train at gunpoint at the California stop.
Authorities say the men then took the victim to an apartment in the 2800-block of West Lyndale and sexually assaulted her.
Chicago police want the public's help finding the two suspects. The suspects' descriptions are vague, but one suspect was wearing a Philadelphia Phillies baseball hat.Anyone with information in the case is asked to call Chicago police.