Ghana Football Association (GFA), in separate statements on Thursday, said they are handing out indefinite suspensions on the erring duo.
The statement from GFA on Muntari said: "The Ghana Football Association (GFA) has suspended Sulley Ali Muntari indefinitely from the Black Stars with immediate effect. The decision was taken in the wake of his unprovoked physical attack on an Executive Committee member of the GFA and a management member of the Black Stars, Mr Moses Armah on Tuesday 24th June, 2014 during a meeting."
"Muntari's accreditation for the 2014 World Cup has been withdrawn with immediate effect," it added.
Boateng was suspended indefinitely after his "vulgar verbal insults" targeted at team coach Kwesi Appiah.
On Boateng, the GFA said: "The Ghana Football Association (GFA) has approved coach Kwesi Appiah's decision to suspend Kevin-Prince Boateng indefinitely from the Black Stars. The decision takes immediate effect and was taken following Boateng's vulgar verbal insults targeted at coach Appiah during the team's training session in Maceio this week.
"Boateng has since showed no remorse for his actions which has resulted in the decision. Boateng's accreditation for the 2014 World Cup has been withdrawn with immediate effect."
Ghana, who are in Group G, face Portugal tonight (9.30 PM IST) in their final group match. They have a slim chance of progressing to the knockouts.