Section 153(a) in Karnataka Panchayat Raj Act, 1993
(a)exercise the powers and perform the duties of the Adhyaksha, when the Adhyaksha is absent or on leave or is incapacitated from functioning [or when the office of Adhyaksha is vacant] [Inserted by Act 1 of 1997 w.e.f. 26.2.1997.]; and