Rai said he wrote a letter to party president Rajnath Singh on the ticket distribution in Bihar.
"I have written a letter to the BJP national president drawing his attention to anomalies in ticket distribution in Bihar," Rai, a former Public Health and Engineering Department minister in the erstwhile NDA-II government, said.
Expressing displeasure over ticket distribution in Bihar, he said he would spell out his course of action tomorrow amid speculation that he had resigned from various posts in the party.
The former minister, who is the member of the Bihar BJP's core committee, has been keeping away from party activity of late apparently to protest against being ignored by the present leadership in the decision-making process, party sources said.
Rai's rebellion came days after four-term MP Lal Muni Chaubey slammed the BJP leadership for denying Lok Sabha ticket to him from his traditional seat, Buxar and filed his nomination today from the constituency.