His roommate, MD Khan expressed shock at the death of his friend, a soft spoken man who liked to stay up late watching comedy shows and listening to music: "He was so nice, gentle and quiet… It's broken my heart."

The following day, the NYPD announced the arrest of Erika Menendez, a 31-year-old woman who had been spotted on security footage fleeing the scene after Sen had been pushed. Upon being detained and taken to a 112th Precinct police station for questioning, Menendez confessed to Sen's murder and revealed as her motivation a desire to commit violence against Muslims. As she told detectives:

"I pushed a Muslim off the train tracks because I hate Hindus and Muslims… Ever since 2001 when they put down the Twin Towers, I've been beating them up."

Sunando Sen was not a Muslim, but as a brown-skinned foreigner living in the United States, he was targeted and killed in an act of hate which is the by-product of an ongoing campaign of bigotry and demonisation against Muslims living in America.