Police in New York City on Friday released surveillance video of the woman suspected of pushing a man to his death in front of a subway train, the second such crime in the city this month. 
 
 The video shows the woman running from the elevated platform Thursday night. Witnesses told police she had been following the man closely and mumbling to herself. She got up from a nearby bench and shoved him as the train pulled in. 
 
 It did not appear the man noticed her, police said. They said the condition of the man's body was making it difficult to identify him. 
 
 The woman was described as Hispanic, in her 20s and heavyset. 
 
 It was unclear if the man and the woman knew each other or if anyone tried to help the man before he was struck and killed at the station in the borough of Queens. 
 
 It was the second time this month someone had been shoved to their death on subway tracks. 
 
 On Dec. 3, 58-year-old Ki-Suck Han was pushed in front of a train in Times Square. A photograph of him on the tracks a split second before he was killed was published on the front of the New York Post the next day, causing an uproar and debate over whether the photographer, who had been waiting for a train, should have tried to help him and whether the newspaper should have run the image. 
 
 A homeless man, 30-year-old Naeem Davis, was charged with murder in Han's death and was ordered held without bail. He has pleaded not guilty and has said that Han had attacked him first. The two men hadn't met before. 
 
 Being pushed onto the train tracks is a silent fear for many commuters who ride the city's subway, which carries more than 5.2 million riders on an average weekday. But deaths are rare. ||||| A young woman pushed a man to his death under an oncoming train at the 40th Street-Lowery Street subway station in Sunnyside, Queens, on Thursday evening, law enforcement authorities said. 
 
 The woman got up from her seat, walked behind the man along the platform, mumbling to herself, witnesses told the police, before shoving him into the path of a Flushing-bound No. 7 train just after 8 p.m. Witnesses said the victim did not appear to notice her. 
 
 The man, whom the police have not yet identified, was pushed with little time to avoid the hurtling train, or for others to come to his aid, said Paul J. Browne, the Police Department’s chief spokesman. His body remained under the second car of the 11-car train, which officers from the Emergency Services Unit planned to lift using specialized inflatable bags to recover his remains. 
 
 “We haven’t determined whether it was random or if there was some connection yet,” Mr. Browne said, “but there was nothing from what the witnesses could see to indicate that they knew each other and he did not, according to the witnesses, appear to realize that she was approaching.” 
 
 The woman, whom the police described as Hispanic, in her early 20s and heavyset, fled on Queens Boulevard and was being sought. 
 
 Outside the elevated station on Thursday night, multiple police vehicles gathered, and local residents braved frigid conditions to huddle on corners and discuss the act of violence in their midst. Three police trucks sat lined up along the tracks, lights flashing against the backdrop of a string of white Christmas lights. 
 
 Investigators were unable to immediately determine much about the victim from his body beyond his gender, Mr. Browne said. He was not carrying identification. 
 
 Giovanni Briones, 44, the owner of the Oasis Restaurant on 40th Street and Queens Boulevard, said the police were able to obtain clear images of the suspect from his 24-hour cameras pointed toward the subway stairs. 
 
 “She jumps from the stairs and she just runs,” he said, describing the video he provided to detectives. He said he did not recognize the woman. 
 
 “I’m sure they are going to get her,” he said. “There are a lot of sick people out there — mentally ill. It’s very sad,” he said. Residents in the area were still shaken, he added, by an earlier episode in the summer in which a man killed his wife and jumped from the tracks at the same subway stop. 
 
 In the restaurant, another woman anxiously described her husband, whom she had not heard from, for a police officer. She was overjoyed when he called a few minutes later. 
 
 Mr. Briones said one of his regular customers was on the train. She told him later that “she felt a bump as the train ran over the man,” he said. 
 
 The No. 7 line was shut down between Court Square and 61 Street-Woodside Avenue, Deirdre Parker, a spokeswoman for the Metropolitan Transit Authority, said late Thursday, and would reopen only when the police had concluded their investigation there. 
 
 It is the second time this month that a man has been killed after being pushed onto the subway tracks. Ki-Suck Han, 58, of Elmhurst, Queens, died under the Q train at the 49th Street and Seventh Avenue station in early December. Naeem Davis, 30, has been charged with second-degree murder in that case. A lawyer for Mr. Davis said that his client had been trying to push Mr. Han away after an altercation.
– For the second time this month, a man has been killed after being shoved onto New York City subway tracks. Last night's victim hasn't been identified, but several witnesses saw the incident, the New York Daily News reports: A young woman was mumbling as she wandered along a subway platform in Queens. After sitting on a bench, she "waited until the train came into the station and approached this individual from behind and pushed him in front of the train," a police spokesman says. "We haven’t determined whether it was random or if there was some connection" between the woman and man, the spokesman adds, but witnesses saw no evidence that they knew each other. The man seemed not to have noticed the woman, witnesses say. Police have released surveillance footage of the woman fleeing the scene, the AP reports. They describe her as a heavyset, 5-foot-5 Hispanic woman in her 20s. The New York Times adds that police were able to obtain images of her from a local restaurant's cameras, which were directed toward the subway stairs. "She jumps from the stairs and she just runs," the owner says.