(AP) — The man accused of pushing a woman to her death in a New York City subway station was arraigned on a murder charge Wednesday and ordered held without bail.

Martial Simon, 61, was charged with second-degree murder in the death of Michelle Alyssa Go, who was shoved in front of a subway train in the Times Square station on Saturday.

A mental fitness exam was ordered for Simon, who authorities said was on parole for a prior felony conviction at the time of the attack. His next court date is Feb. 23.

Authorities gave the defendant’s name as Simon Martial, but a spokesperson for New York County Defenders Services, which is representing him, said his name is Martial Simon.

A vigil was held in Times Square on Tuesday night for Go, who was 40 years old and worked for the consulting firm Deloitte.

A prosecutor in the Manhattan district attorney’s office said the office is seeking to determine whether the attack was motivated by racial bias against Go, who was Asian American.

A request for comment was sent to Simon’s attorney.