The Speaker, Plateau House of Assembly, Mr Abok Ayuba, has been impeached by eight of the 24 members of the legislature.
Yakubu Sanda (APC-Pengana) was elected speaker in an unusual early-morning session on Thursday, presided over by Deputy Speaker Saleh Yipmong.
Sixteen members signed the impeachment, while eight arrived at 6 a.m. to carry out the impeachment in the presence of armed security guards, according to information that was available.
Incompetence, financial misappropriation, and abuse of office are all allegations levelled against the former Speaker.
Mr Abok Ayuba has not responded to the development.
Reporting by Josiah Buzun; Editing by Adeniyi Bakare