Death investigation underway at Halsted Orange Line CTA station

CHICAGO (CBS)-- CTA Orange Line train is service running with residual delays between Midway and Roosevelt due to a medical emergency on the tracks Monday morning. 

According to police, a man was found unresponsive on the tracks, in the 2500 block of South Archer around 4 a.m. He was pronounced dead on the scene. 

A death investigation is underway.