Hull KR captain Joel Tomkins has received a Grade D charge by the match review panel for questioning the integrity of a match official.
The Robins forward received the charge following Hull KR’s loss to Salford Red Devils at the KCOM Craven Park on Saturday.
Tomkins could miss three to five games if he is found guilty.
Elsewhere, Wigan Warriors half-back Tommy Leuluai will not face a ban for Grade A dangerous contact.
Hull FC winger Ratu Naulago was charged with Grade A contact with a match official but he will not serve suspension.
London Broncos front-rower Nathan Mason will face any further action for a Grade A trip in their defeat to Castleford Tigers.
Catalans Dragons forward Jason Baitieri and Salford centre Kris Welham have received cautions for dangerous contract and the use of knees respectively.