UPDATE: The guy was caught on the subway at the Times Square station about 9:00 a.m. today. He had been banging on the door of the conductor's cab, yelling something about how his girlfriend ruined his life. The conductor kept the door (to the cab) locked while he radioed for help, and the attacker then stabbed another passenger in the neck.

The first attack, against the stepfather, was right around the corner from where I used to live.