Federal agents announced they have broken up an international steroid smuggling ring operating in Denver’s northern suburbs, arresting six people and seizing evidence in four raids. Officials said the anabolic steroids were being used for body-building and power sports, and to enhance athletic performance. Prescription and veterinary anabolic steroids, syringes and vehicles were taken by officials in raids conducted under the code name Operation Adonis, said U.S. Atty. Mike Norton and Leslie G. Kinney, agent in charge of the U.S. Customs Service in Denver. Officials said they believe the ring operated for five years, bringing in $500,000 worth of steroids manufactured in Mexico for distribution throughout Colorado, Wyoming, Utah and Nebraska.