ABOUT 100 police officers from the Crime Suppression Division (CSD) yesterday searched seven locations in Kanchanaburi and summoned six people for questioning as part of its investigation into a highly-publicised dispute between retired policeman Charoon Wimul, 62, and teacher Preecha Kraikruan, 50, about the real ownership of five lottery tickets that won Bt30 million in the November 1 draw.