Operatives of the Nasarawa Police Command sealed off the state House of Assembly Complex, to avert a breakdown of law and order.
This comes after two speakers emerged for the seventh assembly.
DSP Ramhan Nansel, the state Police Public Relations Officer (PPRO) said this on Wednesday in a statement in Lafia.
Nansel said that the action was due to a directive by the state Commissioner of Police, Mr Maiyaki Mohammed-Baba.
He said that the commissioner gave the directive after consultation with other security agencies in the state.
Members-elect on Tuesday, June 6 held two parallel proceedings resulting in the emergence of two different speakers for the assembly.
An unusual heavy security presence was noticed at the complex on Wednesday.