Thirty-One Year Old Homeless Woman in Custody in Queens Subway-Push Death

At the New York Post, "Cops nab suspect in Queens subway-push death":

A suspect in the subway-pushing death of a Queens immigrant is in custody, police said.

Cops picked up a 31-year-old homeless woman in Brooklyn early this morning after spotting her wearing the same jacket seen in surveillance video the night that Sunando Sen, 46, was fatally shoved into the path of the 7 train at the elevated 40th Street-Lowery stop in Sunnyside, law-enforcement sources said.

The woman, who has not been charged yet, was grabbed around 5 a.m. on the corner of Empire Boulevard and Bedford Avenue in Crown Heights, the sources said.
The incoherent suspect was mumbling as cops questioned her, and at one point asked where the R train was, the sources added.

Her relatives called cops last night after seeing her on the news, law-enforcement sources said.

More at that top link.