CHICAGO – A freight train struck the rear of another freight train in southwest Chicago early Sunday, derailing several rail cars and damaging a third freight train on an adjacent track, authorities said. Local reports said power was briefly knocked out to more than 2,500 people in the neighborhood.

There were no immediate reports of any injuries following the derailment shortly before 2 a.m. Sunday, CSX rail spokesman Bob Sullivan told The Associated Press.

Eight full-sized cars went off the tracks, and one slid down an embankment into a backyard, a Chicago fire official and media affairs director, Larry Langford, told The Chicago Sun-Times.