Prichard Police have arrested a man they call the ring leader of an assault at Blount High School.
Cruz Carson was arrested today after Prichard Police received an anonymous tip.
Detectives say Carson had a gun when he and two other men went on Blount High School's campus on October 31.
Police say Carson pulled a gun on a 16 year old student and put the gun on his forehead.
The school was placed on lockdown but the suspects ran away.
The student was not hurt.
Cruz Carson faces three felony charges, making a terrorist threat, third degree assault, and possession of a deadly weapon.
Two other men were arrested a day after the assault. Raphael Manassa and Shabazz Thomas.
Four juveniles were also arrested.
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