Lincolnshire Police Federation is calling for a permanent chief constable to be appointed swiftly, to bring stability to the force.
It's after temporary chief constable Neil Rhodes was suspended by the Police and Crime Commissioner Alan Hardwick back in February over allegations of misconduct.
But yesterday, following a judicial review overturning that decision, an independent report has also now recommended the misconduct allegation be withdrawn. There are now four people currently in temporary positions at the top of the force.
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A murder investigation is underway in Rotherham following the death of a teenage girl.
Police say that unless one outstanding line of enquiry provides a breakthrough, the investigation will be scaled down next month.
South Yorkshire Police are continuing to question an 18-year-old man on suspicion of murder following the death of a teenager yesterday.