Erik Morales has reportedly failed a drugs test ahead of his light welterweight world title rematch against Danny Garcia in New York.
It is as yet unclear what substance the 36-year-old Mexican is thought to have taken.
However, both camps are waiting on the results of Morales's B sample after an initial A sample was revealed to be positive, according to Fighthype.com.
Morales and Garcia are scheduled to fight at the Barclays Center in Brooklyn, New York on Saturday.
/https%3A%2F%2Fsportsmole-media-prod.s3.gra.io.cloud.ovh.net%2F12%2F31%2F100x120_jackp.jpg)
/https%3A%2F%2Fsportsmole-media-prod.s3.gra.io.cloud.ovh.net%2F24%2F38%2Fanthony-joshua_1.jpg)
/https%3A%2F%2Fsportsmole-media-prod.s3.gra.io.cloud.ovh.net%2Fuploads%2F2025%2F11%2Fimago1030197305-69170fc432d2a025076858.jpg)
/https%3A%2F%2Fsportsmole-media-prod.s3.gra.io.cloud.ovh.net%2Fuploads%2F2025%2F09%2Fimago1052931243-68c6aa05d63a9176838870.jpg)
/https%3A%2F%2Fsportsmole-media-prod.s3.gra.io.cloud.ovh.net%2F24%2F46%2Fcristiano-ronaldo.jpg)