Can I be arrested in Turkey based on a UK extradition request before formal proceedings begin?

Yes, Turkey permits provisional arrest upon receipt of an urgent request transmitted through INTERPOL or diplomatic channels. This provisional detention can last up to 40 days while the UK prepares and submits the formal extradition dossier. During this period, you have the right to legal representation and to challenge the lawfulness of your detention before a Turkish criminal court. If the formal request is not received within the prescribed timeframe, you must be released, though this does not prevent future proceedings once proper documentation arrives.