Keith Vaz, chairman of the Home Affairs Select Committee, says he has called Lincolnshire's Police and Crime Commissioner to question him over events which have happened over the last few months.
Alan Hardwick suspended Neil Rhodes, temporary Chief Constable of Lincolnshire Police, over "potential conduct matters".
Mr Rhodes returned to work after winning a High Court ruling against his suspension.
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Cold with scattered wintry showers overnight and on Monday.
Weather forecast for the Calendar region with Kerrie Gosney
Cold air from Canada will turn showers wintry overnight into Monday morning. Snow could settle over higher routes. Icy patches possible.