What is wrong with this video?
A Philadelphia teacher is under investigation after video surfaced online showing him physically fighting with a student.
The two of them punch and kick each other and, at one point, the student is put in a headlock.
This all unfolded in the hallways of Lincoln High School.
The video recording by a student shows an English teacher and another student squaring off and fighting as other classmates watch.
According to a law enforcement source, the student was late to class.
The student and the teacher argued. Then they say the teacher was assaulted.
The teacher tried to call security from his classroom. It didn’t work. He then went to neighboring classroom and was again confronted in hallway.
“So he pushed him and [the teacher] pushed him back and then the kid just swung on him,” student Austin Augustine said.