The NYPD has arrested a suspect who shoved a 58-year-old Burmese women down the subway stairs in an attempted robbery in July, leading to her death days later. David Robinson, 53, is suspected of approaching and assaulting Than Wtwe Than and her 22-year-old son when they were leaving the Canal Street “N” subway station in Manhattan on July 28. Police identified Robinson from surveillance camera footage. According to the police, Robinson tried to forcibly remove a bag from the two victims, causing them to fall down the subway stairs, leaving the mother with a severe injury to the head. Than was hospitalized due to her critical condition, but soon entered a coma and died days later at nearby Bellevue Hospital. The NYPD arrested Robinson on Saturday on charges of murder and manslaughter in relation to the incident, after a tipster spotted him at Central Park, New York Daily News reported. According to …