On Nov. 6, a teenager shot and critically wounded another student on a school bus headed to a high school for troubled students, police said.
According to a report in the Philadelphia Inquirer, law enforcement sources said the gunman may have retaliated for an earlier incident of bullying.
Police later arrested the 15-year-old suspect with a .25-caliber handgun. The 17-year-old victim suffered a head wound that left him in critical but stable condition.
The gunfire erupted in the back of the bus around 8 a.m. The shooter shoved a gun in the driver’s face and jumped off the bus through the front door, officials said.
About a dozen students were on the bus when the shooting occurred, and half of them had left and walked to school by the time police arrived, officials said.