Arsenal manager Mikel Arteta said he has "never seen" a decision like the penalty awarded to Brighton in his team's 1-1 draw at the Amex Stadium on Saturday.
Brighton forward Joao Pedro clashed heads with William Saliba in the box and was adjudged to have beaten the France defender to the ball, with referee Anthony Taylor hesitating before pointing to the spot.
VAR cleared the decision and Pedro stepped up to convert the penalty to level the scores at 1-1, a result which held until the full-time whistle and leaves Arteta's side five points behind runaway leaders Liverpool having played two games more.