Karmelo Anthony, 17, is accused of fatally stabbing another 17-year-old, Austin Metcalf. He is charged with murder, but claims self-defense.

Beware of those taking to social media to deliberately spread misinformation, hate, fear and division,” the Frisco, Texas, police chief said.

Police have not said what led to the stabbing, but Austin Metcalf's father said it started when his sons and members of the Memorial High track team questioned Anthony about why he was standing near them instead of his own school's team.

Austin Metcalf's mother has sent a chilling message to the 17-year-old football player's killer following his stabbing death.

The GiveSendGo campaign was purportedly set up by the family of Karmelo Anthony, 17, who cops say confessed to the horrific stabbing at a track meet in Frisco, Texas, last Wednesday.