The written reasons for the Independent Regulatory Commission’s decision will be released in due course.
The FA said: «The standard punishment for this offence was clearly insufficient, and Liam Roberts subsequently denied this.
«Following a hearing, the Regulatory Commission upheld the FA’s claim, set aside the standard three-match punishment, and instead imposed a six-match ban.»
Roberts has been Millwall’s reserve goalkeeper for much of the season — he has played in just two Championship matches after first choice Lukas Jensen suffered an injury in January.
He featured in both Millwall’s Carabao Cup games in August and in his side’s FA Cup fourth and fifth-round ties.
