Hearts manager Robbie Neilson fumed after a narrow defeat at the hands of Celtic and took aim at the match officials.
The Jambos went two down to Reo Hatate's long-ranger and a neat finish from Giorgos Giakoumakis - but the Greek striker appeared just ahead of John Souttar when Matt O'Riley played the killer ball.
Liam Boyce would halve the deficit with a similarly contentious goal before missing from the penalty spot.