A controversial Jersey politician who claimed officials on the island covered up child abuse is considering legal action against the police after he was arrested.
Whistle-blower Stuart Syvret was arrested in the parish of Grouville in connection with an alleged breach of data protection law.
The 43-year-old senator was not charged and, after a day in custody, was released "pending further inquiries".
He said officers searched his home and he was kept in a police cell all day other than for a two-hour interview. He claims the police did not have a warrant to search his property and believes the arrest was politically motivated.
Mr Syvret said: "The whole exercise was designed to intimidate and harass me and to intimidate the whistle-blowers who give me information. This was an act of oppression against the person who is leading the opposition to the establishment on this island.