An unsuspecting traveler was pushed off a New York City subway platform and into the path of an approaching train Monday afternoon, according to Reuters.
The 49-year-old victim was pushed just as a southbound train pulled into Times Square station around 1 p.m. EST. Authorities said she was pronounced dead at the scene.
Neither the victim nor the suspect were immediately identified by authorities.
However, FOX News reports that the suspect was described as a 30-year-old woman wearing a pink shirt and scarf.
According to police, the suspect has a history of bipolar disorder and schizophrenia.
Witnesses reported seeing the women arguing before the victim was pushed to her death.
William Aubry, the police department’s chief of Manhattan detectives, however, said it wasn't immediately clear whether the women knew each other.
What happened here today is tragic.
Two hours after the deadly encounter, emergency responders were still working to remove the woman's body from the tracks.
Aubrey told Reuters that investigators are still reviewing surveillance video and interviewing witnesses in hopes of determining a motive.
Each year dozens of people are hit by New York City subway trains. Most, however, are accidental.
Last year, a woman was sentenced to 24 years in prison for pushing a man into the path of an incoming New York City train in 2012.