Power as to matters of evidence (House of Assembly)
Section 129(2) · 1999 Constitution (2004 edition)
What Constitution says
(2) A summons or warrant issued under this section may be served or executed by any member of the Nigeria Police Force or by any person authorised in that behalf by the Speaker of the House of Assembly of the State.
This is the 1999 Constitution as published in 2004. Later amendments aren't included yet, so a section may have changed since.
Original source
Official Gazette · CFRN 1999 official PDF · printed page 66. Original document
Release: draft-c8d50d87fae9. Source scope, review and corrections