Yes: the Speaker is the guardian of the privileges of the House, and all matters that relate to access to the precinct must first be approved by the Speaker. Without getting into anything specific, first, in any kind of suspected criminal activity, assuming there are reasonable grounds to believe a criminal offence has been committed by someone, access to the precinct has to be given by the Speaker. If that's given based on the facts presented, then arrangements can be made for further investigations. But the precincts themselves in terms of access are protected by the Speaker.
On February 2nd, 2015. See this statement in context.