Suspect awaits court appearance on murder charge in New York City subway shove

This undated arrest photo provided by the New York City Police Department is of Kevin Darden. He has been arrested and is to be charged in the murder of Wai Kuen Kwok on Nov. 16, 2014. Kwok was standing on a platform at the Grand Concourse and East 167th Street station in the Bronx when he was allegedly pushed from behind by Darden. Kwok was struck by an approaching southbound D train and died at the scene. (AP Photo/NYPD) (The Associated Press)

This undated arrest photo provided by the New York City Police Department is of Kevin Darden. He has been arrested and is to be charged in the murder of Wai Kuen Kwok on Nov. 16, 2014. Kwok was standing on a platform at the Grand Concourse and East 167th Street station in the Bronx when he was allegedly pushed from behind by Darden. Kwok was struck by an approaching southbound D train and died at the scene. (AP Photo/NYPD) (The Associated Press)

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.