A New York Police Department (NYPD) officer watches cars in gridlock outside Trump Tower in New York, New York, US, 25 September 2018. (Photo: EPA-EFE / JOHN TAGGART) 
Andrew Abdullah, 25, was arrested in the slaying of Brooklyn resident Daniel Enriquez, 48, who was shot to death while he rode in a subway car on Sunday morning, a New York Police Department spokesperson said.
He was pictured by a Reuters photographer walking into the NYPD's 5th Precinct station in handcuffs with a police detective escort.
No details about his arrest were immediately available.
(Reporting by Steve Gorman in Los Angeles and Brendan O'Brien in Chicago; Editing by Leslie Adler)