A suburban Philadelphia mother has been sentenced to two years of probation stemming from her 14-year-old son's threat to shoot up his suburban Philadelphia high school less than a week after the elementary school massacre in Connecticut.
WATCH: Suspected LAX Gunman's Family Offers Condolences
The Bucks County Courier Times said Lizabeth Donahue apologized for the incident before Monday's sentencing.
Her son was arrested Dec. 20 after students at Council Rock South High School alleged he threatened an attack on the school because it was the end of the world, referring to the end of the Mayan calendar.
The school was closed and police recovered a pair of World War II-era semi-automatic guns in the teen's bedroom that belonged to his grandfather.
The teen admitted making the threats and is in a juvenile treatment facility.
