German police have arrested a former security worker for the family of Formula One legend Michael Schumacher in relation to a case of attempted blackmail, prosecutors announced on Friday. The 52-year-old suspected mastermind was arrested on Thursday in the town of Wülfrath near Wuppertal, in the western German state of North Rhine-Westphalia, and a large volume of additional evidence was secured, said chief public prosecutor Wolf-Tilman Baumert. In late June, investigators had arrested the two suspected blackmailers, a 53-year-old and his 30-year-old son. According to the public prosecutor’s o…