Earlier this month 20-year-old Bett was provisionally suspended after he refused to provide drug test on August 15.
On Thursday Athletics Kenya received a notification from the IAAF Athletics Integrity Unit that Kipyegon Bett returned a positive doping test for banned blood booster erythropoietin (EPO).
“We had submitted defense for the case of ‘refusing or failing to submit to sample collection’ by Friday’s deadline. But last night, we received another notification about the new case,” The Athletics Kenya executive committee member Barnabas Korir said.
“We have kicked off due process, accorded to every athlete as per the rules set by AIU. If the second test confirms the first one, then the athlete will have to face the consequences,” he added.
If A sample returns positive, Bett becomes the fourth Kenyan athlete to be suspended for doping in less than a month. Athens Marathon champion Samuel Kalalei, distance runner Lucy Wangui Kabuu and sprinter Boniface Mweresa have been charged with anti-doping rule violations.
Other top Kenyan athletes who recently failed doping test are Kenya-born Bahraini athlete Ruth Jebet, the 2016 Rio Olympic 3,000m steeplechase champion, Olympic and three-times world 1500m champion, Asbel Kiprop, and 2016 Olympic marathon winner Jemima Sumgong.