Boss Steve Cooper pointed to a “huge error” from the officials as Nottingham Forest’s winning run came to an end against Luton Town.
The Reds were not at their best as they fell 1-0 at Kenilworth Road to their promotion rivals. But some questionable officiating did not help their cause.
A controversial first-half penalty proved to be the difference between the two sides, as Kal Naismith was clinical from the spot after Jack Colback had been penalised for a handball.