STAMFORD - A former student who was once expelled from Westhill High School in Stamford is accused of threatening to kill the principal and shoot up the school.

Police say 24-year-old Okino Richards made the comments to a teacher from Westhill at a gas station Saturday morning. Police say the teacher first approached him because he was acting erratically, and that's when Richards allegedly went on a "tirade," blaming his life's troubles on the school and its principal.

The teacher immediately reported the threats, and several hours later police say they were called to Lawn Avenue for reports of a man with a gun. That man was Richards, according to investigators. He was taken into custody.

Investigators say Richards had crack-cocaine with him when he was arrested, and he faces drug charges as well.

In court today, Richards grinned and made faces at News 12 Connecticut's cameras as he appeared before a judge.