Our news-gathering partner, KDLT News reports that alleged Harrisburg school shooter, Mason Buhl pleaded not guilty in his first court appearance Thursday.

Buhl, 16, is charged with attempted murder for shooting Harrisburg Principal Kevin Lein Wednesday morning.

Buhl allegedly entered Harrisburg high school just befor 10:00 AM Wednesday morning, confronting Principal Lein and shooting him in the arm. Assistant Principal Ryan Rollinger and Athletics Director Joe Struwe heard the shot then tackled and held the suspect until police arrived.