In order to be on a Brooklyn-bound L train, he would have had to be all the way downtown from where he lives, down to 14th St. He's a good 45 minutes or so uptown depending on what route he'd take to go downtown on a Sunday.
I wonder why the L train? It's a line not integrally connected to many other lines, runs between downtown Manhattan and Brooklyn. I wonder if he know a young woman was accidentally killed yesterday at another 14th St. station (there are more than one, connecting to different subway lines).
Mysterious. I hope he didn't act on this. Whatever.