Berlin police tweet at @PolizeiBerlin and @PolizeiBerlin_E (Einsatz). They used the hashtag #pickpocket to clear up some cases. Presumably there are more speakers of English than German in Berlin nowadays. Aufklärungsgezwitscher in B.Z.
Thanks to Trevor.
Also check out Solihull Police best tweets. E.g.
Not a scam: If you’ve committed a burglary in the Solihull area within the last week – come to our police station & claim a FREE iPad.