Matthew Rodriguez, 18, was apprehended in Pennsylvania in connection to shooting that killed Kaori Patterson-Moore

A second suspect in the stray-bullet killing of a seven-month-old baby on a Brooklyn street was arrested on Friday, investigators said, two days after a shooting the New York police department (NYPD) commissioner called “a tragedy that truly shocks the conscience”.

Matthew Rodriguez, 18, was apprehended in Pennsylvania by NYPD detectives working with US marshals, according to authorities.

The suspected shooter, 21-year-old Amuri Greene, was arrested shortly after the drive-by gunfire that killed Kaori Patterson-Moore. Greene pleaded not guilty to murder and other charges at an arraignment on Friday night.

Kaori was in her stroller when two men sped down a street on a moped on Wednesday afternoon. Greene, riding on the back of the vehicle, fired into a group of people on a street corner, according to a court complaint.