A man suspected in a deadly mugging on a subway station stairway was arrested four months later after someone spotted him in Central Park and called a tip line, police said Saturday.

David Robinson, 53, was awaiting arraignment after being arrested Friday on murder and manslaughter charges in the death of Htwe Than Than. It wasn�t immediately clear whether Robinson had an attorney who could comment on the allegations, and no phone number for his home could immediately be found.

Police said the 58-year-oldl victim was walking up some steps in a station in Manhattan�s Chinatown with her 22-year-old son on July 17 when Robinson grabbed the son�s backpack, propelling both son and mother down the stairs. She was in a coma for several days before succumbing to her injuries.

A seamstress who made aprons, she came to the U.S. from Myanmar about three years ago, according to WABC-TV, which interviewed her family in July.

The New York Police Department publicly identified Robinson as a suspect later that month.

The assault happened amid a wave of concern about crime, particularly in subways, in the nation�s most populous city. Crime spiked in the subway system as ridership plunged during the early part of the coronavirus pandemic.

�This was a terrible crime over the summer, and our hearts continue to go out to the victim�s family,� Metropolitan Transportation Authority spokesperson Tim Minton said in a statement Saturday.

Noting that the transit agency now has security cameras in every station, he said that �anyone who preys on transit riders can expect to be identified and face justice.�

(AP)