Police are tight-lipped on an investigation following a complaint made by one police officer against another when the pair were off duty.
Assistant Commissioner Sue Schwalger said the "incident" is of a serious nature and a thorough investigation is now underway.
"The incident was reported to have taken place on 5th February when both officers were off-duty," Schwalger said.
"One of the officers has been stood down while the investigation is ongoing."
Police are unable to comment on the matter further.