The brother of the 17-year-old high school athlete who was stabbed to death at a track meet on Wednesday said the tragic incident was all sparked by an argument over a seat.
Hunter Metcalf told WFAA his twin brother, Austin Metcalf, got into a tiff with Karmelo Anthony while out at the event in Texas ... because the Frisco Centennial High School 17-year-old was sitting underneath their Frisco Memorial High School tent.
"We asked him to move," Hunter said.