Detroit police are trying to unravel what took place inside a high school on the city's west side.
Officials say one man was shot in the arm inside the school, but
no students were involved in the shooting. The wounded man was
taken to a local hospital.
Police say the shooter fled.
School security officers say passing students opened a side door
to let the men inside.
One of the men then sprayed two students with Mace.
Two shots were fired in the vestibule, but officers don't know
how many times the wounded man was struck.
Students were told to stay in their classrooms until school was