A 15-year-old Memorial High School freshman was found dead at a home in what Frisco police called a possible double murder-suicide. Just months later, the same Frisco high school reeled yet again when a 17-year-old junior was stabbed by another student at a school track meet on Wednesday,

The attack claimed the life of Austin Metcalf, 17, of Frisco. The victim’s father, said that his son was stabbed in the heart and died in his twin brother’s arms.

North Texas student Austin Metcalf, 17, was fatally stabbed at a track meet Wednesday. Karmelo Anthony, 17, has been arrested and charged with murder.