A Harvard University graduate student was arrested for murder Saturday morning after allegedly stabbing a teenager five times during a fight outside a Cambridge, Mass., pizza parlor, the Harvard Crimson reported.

Cambridge Police Department officers arrested Alexander Pring-Wilson, 25, Saturday at 8:30 a.m. at his Somerville, Mass. home for the murder of 18-year-old Michael Colono of Cambridge, according to the Crimson.

Police responded to a report of stabbing outside Pizza Ring — a short walk from Harvard’s Mather House — at 1:50 a.m. and immediately questioned Pring-Wilson, a student at Harvard’s Davis Center for Russian and Eurasian Studies.

Colono was pronounced dead with four stabs to the torso and one to the arm at 3:15 a.m. at Beth Israel Deaconess Medical Center. The autopsy confirmed that Colono’s death was a homocide, the Crimson reported.

Pring-Wilson’s attorney, Jeffrey Denner, told the Crimson that Colono and another man attacked Pring-Wilson and he pulled a knife in self-defense.

— Philip Rucker