Chicago rapists have sunk to a new low as theyve resorted to pushing a woman, who refused to do sexual things, in front of a moving train:

A woman was pushed into the path of a Metra train last night by a man who forced her onto a South Side train platform and demanded a sex act, a Metra spokesman said. The woman was hospitalized in serious condition.

It was not known if the attack was related to a series of robberies of women and a sexual assault near another South Side Metra station, but the descriptions of the assailants appeared to differ.

In the Thursday night attack, the 33-year-old woman was walking in the street in the area of the station at 75th Street and South Chicago Avenue about 11:30 p.m. when a man approached her, implied he had a weapon and forced her onto the train platform, said Metra spokesman Michael Gillis.

He demanded a sex act, he said, and when she refused he pushed her into the path of an inbound Metra Electric train.

The assailant was described as black, 5-foot-10 to 6 feet, 200 to 220 pounds with a heavy build, black curly hair and a full beard. He was wearing blue jeans and a tan plaid jacket.

The woman, who was not identified, was being treated at Northwestern Memorial Hospital. A hospital spokesman had no information, but police said her injuries did not appear life threatening. Detectives were interviewing her this morning.

[The train] was slowing as it was coming into the station, so it wasnt zooming through, Gillis said.

He described the station where the incident occurred as a flag station, where an engineer will stop a train if someone waiting for it, or if someone abroad the train requests to get off. Gillis said the engineer noticed that the platform was occupied [with at least one person], but he did not know if the engineer noticed the victim.

Trains were delayed following the incident, Gillis said.