Authorities say another student saw the boy remove the weapon from his book bag on a school bus on their way to Central Middle School Wednesday.
Somerset County Prosecutor's Office spokesman Jack Bennett told The Courier News of Bridgewater the other student texted her mother, who alerted school authorities.
Police were waiting when the bus pulled in.
Bennett says no threats were made to any of the students.
The boy's name was not released because he's a juvenile.
---
Information from: Courier News, http://www.mycentraljersey.com
