A policeman has been arrested accused of assaulting a senior officer.
The policeman, who has not been named, was arrested following an incident at Sussex Police headquarters in Lewes on Thursday 10 April.
He has since been bailed pending further inquiries - and is believed currently to be off work on sick leave.
The victim of the alleged assault was a detective chief inspector from the professional standards department.
A Sussex Police spokesman issued a statement on Tuesday saying: "A man has been arrested and bailed pending further inquiries following an alleged assault on a police officer at police HQ in Lewes last week."