Updated at 12:48 a.m., Dec. 28, 2012

NEW YORK (CBSNewYork) — A man was killed Thursday evening after being shoved in front of an oncoming Subway train, police said.

Investigators continued to look for a female suspect, who is believed to have pushed the victim as a Queens-bound “7” train sped into the 40th Street-Lowery Street station around 8 p.m., 1010 WINS’ Eileen Lehpamer reported.

Citing several witnesses, police told reporters that the suspect was seen mumbling and talking to herself before sitting down on a wooden bench by herself.

Authorities said the woman then waited until the last possible second before approaching the victim from behind and pushing him onto the elevated tracks.

“From what I understand…it would appear the train was very close when he was pushed into its path,” Deputy NYPD Commissioner Paul Browne said.

“Oh my God. That … I’ve never heard of that. That is really … a woman pushed a man. … Oh my God. That is really crazy,” Woodside resident Shiek Hossain told CBS 2’s Derricke Dennis.

“I think that’s horrible — so many crazy people running the streets,” Beverly Gonzalez added.

Witnesses said the victim didn’t notice the suspect, who police described as a heavyset Hispanic woman in her 20s, approximately 5-foot-5, with brown or blonde hair.

The unidentified woman was said to be wearing a blue, white and gray ski jacket and Nike sneakers. She fled down stairs following the push, police said.

Police said surveillance video from a pizzeria across the street from the station may have captured the suspect running away. Investigators were taking a close look at the footage late Thursday night.

“I hope they can find something,” restaurant owner Giovanni Briones said.

The Metropolitan Transportation Authority said 7 train service was being disrupted as a result of the incident.

LINK: Latest MTA Information Here

The incident marked the second deadly subway push this month. Back on Dec. 3, police said Ki Suck Han was pushed to his death by 30-year-old Naeem Davis.

“It’s very sad. It seems people are doing this over and over. I don’t know why,” Hossain said.

Stay with CBSNewYork.com for more on this still developing story…