Four German holidaymakers were detained by police on the Spanish island of Mallorca for allegedly beating a cab driver, local police on the island announced. Among those in custody are two off-duty police officers from the western German city of Essen, a source told dpa on Thursay, confirming a previous report in the Rheinische Post newspaper. The victim told the Mallorca Zeitung newspaper that the men had claimed to be German police officers and had even shown him their ID cards. The German tabloid Bild quoted the victim as saying: “I thought I was going to die.” The men reportedly got into t…