A 16-year-old student has been arrested for allegedly wounding the principal with a knife at a Catholic high school in Los Angeles County.

Sheriff's Sgt. Diane Hecht says the boy was in the principal's office when he slashed the principal twice across the back Friday at Don Bosco Technical Institute in Rosemead.

A school statement says Principal Gary J. Catalano was taken to the hospital in good condition.

Hecht says the boy was captured outside the school with a pocket knife. His name wasn't released.

Sheriff's Deputy Johnie Jones say the attack was unprovoked and there didn't appear to be any past problems between the two.

Don Bosco is a Roman Catholic, all-male college prep school located about 20 miles east of downtown Los Angeles.