Eyewitness to Florida School Shooting Says There Was Second Shooter

She was actually talking to the suspect that Police later arrested,
and she could hear shots being fired from another location at the
school.

https://www.youtube.com/watch?v=Kwl9ZMerCCU 



This student also makes a reference to “other shooters”

https://www.youtube.com/watch?v=MoNM6ovPgeM