World Athletics president Sebastian Coe has hinted track and field could follow swimming in bringing in a tougher policy on transgender athletes competing in women’s events. 

Swimming’s governing body FINA announced on Sunday it intends to set up an “open category” to allow transgender athletes to compete in a separate class. According to FINA’s new policy, transgender athletes will not be allowed to compete in female events unless they can “prove they have not experienced any element of male puberty.” That ruling came in response to American swimmer Lia Thomas becoming the first known transgender athlete to win an elite US collegiate title in March. Thomas, a freestyle specialist, competed for the University of Pennsylvania men’s team from 2017-19.