Chicago, Oct 13: A commuter train derailed yesterday afternoon on the city's south side, injuring as many as 100 people, officials said. At least 10 people were taken to nearby hospitals, including two passengers with serious injuries, said Chicago Fire Department spokeswoman molly Sullivan. Most of the injuries were minor, officials said. The derailment on metra's rock island district line, running between the city and the south suburb of Joliet, involved two train engines and five coach cars carrying about 200 people, authorities said. One of the engines was on its side. The cause of the derailment was under investigation, metra spokesman tom miller said. Bureau Report