A gun in an 8-year-old boy's backpack fired into the seat of a Mesa school bus Friday afternoon, school district officials said.
About 50 students from Franklin Northeast Elementary School were on the bus when the gun went off about 2:30 p.m. while students were being transported home, according to spokeswoman Helen Hollands, spokeswoman for Mesa Unified School District. No one was hurt.
The boy had apparently taken the handgun to school, according to Mesa Police. At some point, he was manipulating the gun in the backpack and fired a single shot. Police believe the bullet is lodged in the floor or seat of the bus.
The boy was being detained pending the investigation as to where he got the gun, Mesa Police said in a release.
The incident happened near the intersection of 74th Place and June Street in Mesa. Police, as well as security officials from the district, responded.
No one at the school or on the bus was aware the student had a gun in a backpack, Hollands said.