A 16-year-old student was cut by an unknown suspect outside Milford Mill Academy on Monday, a Baltimore County police spokeswoman said.
The teen suffered a cut to his leg just before noon behind the high school in the 3800 block of Washington Avenue, in northwest Baltimore County.
"We believe it was an attempted robbery," police spokeswoman Detective Cathy Batton said. She said the incident remains under investigation and could not say whether another student was involved.
The teen was taken to a local hospital for minor injuries, police said. Batton said police are still trying to determine what was used as a weapon.
She said the student was not involved in an "organized class activity" at the time.