A man charged with fatally shoving a stranger in front of a New York subway train is expected to appear in court.

The Bronx district attorney's office says Kevin Darden should have a court appearance late Wednesday afternoon or evening on a murder charge.

Police say Wai Kuen Kwok (wy koon kwok) was standing with his wife on a Bronx subway platform on Sunday when Darden pushed him in front of a train. Darden was picked up Tuesday evening.

Surveillance footage shows the suspect walking calmly from the station. Later footage shows him getting off a bus 10 blocks away, heading into a convenience store and then emerging smoking a cigarette.

Police say Darden has a history of robbery and assault arrests. It wasn't clear if he had a lawyer.