The New York Post has been criticised for a front-page photo showing a man moments from being fatally struck by a subway train.
Readers of the tabloid have asked why neither its photographer nor anyone else helped Ki-Suck Han, 58, as he tried to clamber to safety.
He was pushed on to the track at the 49th Street station near Times Square by a stranger seen talking to himself.
Police arrested the suspected assailant on Tuesday.
Surveillance footage had been found of someone fitting descriptions of the man, who has worked with street vendors near the Rockefeller Center in Midtown, police said.
One of the bystanders during Monday's incident was a New York Post freelance photographer who managed to take photos.
In the New York Post report, the photographer, R Umar Abbasi, said he had used his camera flash in an attempt to warn the approaching train driver.
"I just started running, running, hoping that the driver could see my flash," he said.
The tabloid's video report on the story said: "Not being strong enough to physically lift the victim himself the photographer used the only resources available to him and began rapidly flashing his camera to signal the train conductor to stop."
Readers of the tabloid and many on Twitter were not convinced.
"Claims he was using camera's flash to catch conductor's attention," Ellen Comisar tweeted. "But result seems a tad too well composed."
"Wow! enough time to take a few pictures," wrote Joseph Monte on the Post's website. "Why didn't the person help? How many pictures did they take?"