In a written account Abbasi gave the Post, he said a crowd took videos and snapped photos on their cellphones after Han was pulled, limp, onto the platform. He said he shoved them back as a doctor and another man tried to resuscitate the victim, but Han died in front of them.
Mayor Michael Bloomberg said Han, "if I understand it, tried to break up a fight or something and paid for it with his life."
The suspect's last known address was in a working-class neighborhood in Queens. The only neighbor who even vaguely remembered Davis was Charles Dawes, 80, who stays with his son two doors down.
Davis "came and went, came and went, and he always looked serious," Dawes said. "But I haven't seen him for three or four months."
Subway pushes are feared but fairly unusual. Among the more high-profile cases was the January 1999 death of Kendra Webdale, who was shoved to her death by a former mental patient.
Straphangers on Wednesday said that they were shocked by Han's death but that it's always a silent fear for many of the more than 5.2 million commuters who ride the subway on an average weekday.
"Stuff like that you don't really think about every day. You know it could happen. So when it does happen it's scary but then what it all comes down to is you have to protect yourself," said Aliyah Syphrett, 23, who sat on a bench as she waited at Pennsylvania Station in Manhattan.
Diana Henry, 79, a Long Island resident, was waiting for a train at 34th Street. She stood as far from the platform as possible — about a dozen feet back, leaning against the wall.
"I'm always careful, but I'm even more careful after what happened," she said. "I stand back because there are so many crazies in this city that you never know."
Associated Press writers Verena Dobnik, Karen Matthews and Tom Hays contributed to this story.