It happened in front of 730 East 166th Street in the Tremont section on Saturday, July 24th around 3:40 a.m.
Police say a black man in his 20's stabbed an 18-year-old girl in the neck and slashed a 20-year-old man on his body.
Troynisha Harris was rushed to Lincoln Hospital where she was pronounced dead.
The other victim was treated at the scene and is expected to make a full recovery.
Police released surveillance video of the attack.
Anyone with information in regard to this incident is asked to call NYPD Crime Stoppers at 1-800-577-TIPS (8477).
You can also submit your tips by logging onto the Crime Stoppers website at www.NYPDCRIMESTOPPERS.com or by texting your tips to 274637 (CRIMES) and then entering TIP577.
All calls will be kept strictly confidential.