Nigerian striker Orji Okonkwo has been suspended from football for four years after being found guilty of a doping violation, according to Fifa.
The 24-year-old, who plays for Serie A side Bologna, was initially handed the ban by the national anti-doping agency (Nado Italia) in June.
In February, Okonkwo - who is set to appeal - had tested positive for the steroid clostebol during a loan spell at Cittadella.
Clostebol, which the player said he used to treat a problematic knee, is on the World Anti-Doping Code prohibited list.
Fifa's disciplinary committee has now extended the Nado Italia sanctions to have "worldwide effect", according to its chairperson Jorge Ivan Palacio.
"Consequently, the Committee decided to extend the sanction imposed on the player by the Italian Nado on 20 June 2022," read a Fifa statement.