Pomersbach has been accused of misbehaving with an American woman during a party at a five-star hotel here following Royal Challengers' away match against Delhi Daredevils in the IPL on Thursday.
Team mentor Anil Kumble said the franchise was planning an internal inquiry into the incident.
"It is a very serious thing to have happened and we will certainly look into it. We are planning an internal inquiry into the matter," said Kumble.
"It is an unfortunate incident. It is disappointing. RCB will certainly not play Luke henceforth and we will cooperate with those who are investigating the incident," he added.
Pomersbach, who earlier represented Kings XI Punjab in the IPL, has not played a single game for the Royal Challengers this season.