A man was charged late Tuesday in the fatal shoving of a subway rider in the Bronx after he was taken into custody earlier in the day in a separate assault at a Manhattan subway station this month, the police said.

The man, Kevin Darden, 34, was arrested on a murder charge in the death of the rider, Wai Kuen Kwok, 61, who was shoved into the path of an oncoming subway train on Sunday, the police said. Mr. Darden, who was located in the Bronx near his last known address, was believed to appear in surveillance video leaving the scene of the killing.

During the three-day manhunt, the victim of an earlier shoving episode, a 51-year-old man pushed to the platform of the West Fourth Street subway station on Nov. 6, told the police that he had been attacked by the same man who appeared in the video from Sunday.

“You shouldn’t walk in front of me,” the assailant told the man, according to the police, before shoving him to the ground. “I’m warning you.”