Sources tell NY1 a 17-year-old boy is in police custody after he fired a gun inside his Bronx school.

Here is some footage outside of where it happened just after 2 p.m. Thursday at The Metropolitan High School.

That is on Reverend James Polite Avenue near East 167th Street in Foxhurst.

Sources say the student let off one shot, and no one was hurt.

In a statement, a spokeswoman for the Department of Education says the incident is being investigated, and they are working with the NYPD to ensure swift follow-up action is taken.