A 19-year-old from the Bronx was fatally stabbed Thursday outside his Manhattan high school.

Theodore Beckles attended Independence High School on West 56th Street between Ninth and Tenth Avenues.

The New York Times reports Beckles engaged in a fight with students from High School for Environmental Studies, which is housed in the same building as Independence, when he was stabbed in the abdomen.

David Scalza, a 51-year-old retired teacher, said, "I heard a lot of screaming and saw a lot of boys and girls running up and down the street."

The fight reportedly stemmed an earlier altercation between Beckles' girlfriend and a girlfriend of another student.

Beckles was taken to NewYork-Presbyterian Hospital/Weill Cornell Medical Center where he was pronounced dead. Police are investigating and no arrests have been made at this time.