The three -- Communist Party of India-Maoist north Bihar zonal committee's self-styled secretary Musafir Sahni, Jai Mangal Thakur and Ram Parvesh Baitha -- were shifted to the Bhagalpur jail on Wednesday evening, officials told PTI.

The IG (prisons), Ramesh Lal, had approved the shifting of the ultras following intelligence reports that the Maoists might orchestrate their escape from jails in Bihar.

Altogether 28 ultras, including three women activists, are lodged in the central jail in Motihari and authorities are keeping close watch on their activities, they added.