Befuddled and petrified, students and teachers hid in the classrooms as they heard gunshots ring out multiple times at their Western Australian school. 
Just before midday on Wednesday at Atlantis Beach Baptist College in Perth’s outer north, a teenager fired three rounds from his rifle, allegedly from the school’s car park. One shot hit the inside of a building with people inside. 
Terrified students hid under desks. Some children called triple zero to report the incident. The school was plunged into lockdown.  
Police rushed to the school at about 11.50 a.m. and arrested the 15-year-old boy, who was a former student of the private school. Police body cam shows an officer pushing the teenager to the ground before handcuffing him….