Elland Road security were forced to remove an intruder who confronted Newcastle boss Eddie Howe during the clash with Leeds United.
BT Sport cameras captured the moment a member of the capacity crowd made their way up the touchline and into the technical area of the visiting boss. The flashpoint occurred in the closing stages of a thrilling 2-2 draw to start the Premier League weekend.
Newcastle were waiting to take a dangerous free-kick on the edge of the box after Junior Firpo was dismissed for a second yellow. Kieran Trippier stood over the free-kick, before the fervent crowd noticed the disturbance on the touchline.