An argument aboard a
The argument broke out about 6:15 a.m. on the 210 bus line while it was northbound on Crenshaw Boulevard near Rosecrans Avenue on the border of Hawthorne and Gardena, said Lt. John Sullivan of the department's transit service bureau.
The confrontation led to one man pulling out a knife or box cutter and slashing another man in the face, then running off, Sullivan said.
Paramedics took the victim to a hospital, where he was being treated for his wound, Sullivan said.
The attacker was last seen running north on Crenshaw, Sullivan said. KTLA-TV reported that a man was detained in connection with the attack about 7 a.m.