Japanese police have arrested four people for allegedly selling at an online auction elephant tusks as mammoth tusks to evade a trade ban, police said Wednesday.Nobumasa Daigo, a 58-year-old executive of Daigo Ivory Co. that processes and sells ivory products, and three other family members who work for the company based in Saitama Prefecture near Tokyo were arrested Monday on suspicion of violating the Unfair Competition Prevention Act that prohibits misleading labeling of goods.Tokyo's Metropolitan Police Department, which led the investigation, suspects the company annually sold elephant…READ FULL ARTICLE