A former Plano high school student was sentenced Monday to 20 years in state prison after pleading guilty to an ISIS-inspired plot to commit mass murder at a Collin County mall. Matin Azizi-Yarand, 18, discussed his plans with an undercover FBI employee to "run and gun" with firearms blazing at the Stonebriar Centre Mall in Frisco and to kill civilians and police officers during the slaughter. -- end excerpt --