NEW YORK — A man was pushed onto the tracks at a Bronx subway station Sunday and was struck and killed by an oncoming train, authorities said.

Police were trying to find whoever pushed 61-year-old Wai Kuen Kwok of the Bronx off the platform at the Grand Concourse and East 167th Street station at around 8:40 a.m. Baldeo was struck by a southbound D train and pronounced dead at the scene, police said.

Authorities are investigating the circumstances leading up to the shove. Police said a preliminary investigation showed that an unknown man pushed Kwok onto the tracks, then fled the scene onto the street.

There have been three other incidents in recent years that involved a person being pushed onto the tracks.

In April 2013, a train ran over a man desperately clawing at a Manhattan subway platform after being pushed onto the tracks by a homeless suspect with whom he’d been arguing.

In December 2012, another homeless man was arrested for pushing a Queens straphanger in front of a Times Square train that fatally crushed him.

And later the same month, a mumbling woman pushed a man to his death in front of a subway train in Queens.

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