As reported by the Independent, the former Brazilian worldwide was arrested as part of a police siege in Rio Grande do Sul, where the officers burst in on the on-going cockerel sparring bout and seized 89 of the birds - alongside around £25k in cash which was part of the illegal betting circuit.
The broadcaster alleges that 89 "fighting roosters" and a shotgun were seized in the raid, where spectators are thought to have been betting on fights between the cocks in question.
The penalty in Brazil includes a hefty fine and imprisonment for between three months to a year.
His farm was raided in 2011 when several fighting cocks were widely reported to have been discovered by police.
It is not the first time that Rochemback has been linked to the bloodsport.
Promoter of justice Marcos Eduardo Rauber told Globo Esporte: "It was a big inter-state event, with people from Santa Catarina and Parana".
However, his father said his son was not present at the scene.
"Fabio was with me in our house in Soledade, but later he returned to Porto Alegre", Juarez Rochemback told reporters.
His career also included spells Sport Club Internacional and Sporting CP, before he joined Middlesbrough in August 2005.