Section 10(2) in Bihar Vigilance Investigation Cadre Rules, 2012
(2)Procedure of recruitment - (a) 12 posts of this grade shall be filled up taking service on deputation from Home Department.(b)One post shall be filled up by promotion from the grade of Deputy Superintendent of police. It shall be essential for promotion to complete the kalawadhi as determined by the General Administration Department, from time to time. The promotion may be granted on the basis of the recommendation of the Departmental Promotion Committee.
