European football’s governing body said on Monday that an ethics and disciplinary inspector had been appointed to investigate a potential violation of their regulations by the AC Milan and Sweden striker.
Ibrahimovic, 39, reportedly owns a 10 per cent stake in Bethard, a Malta-based gambling website, through his company Unknown AB.
A Uefa statement read: "In accordance with Article 31(4) of the UEFA Disciplinary Regulations (DR), a UEFA Ethics and Disciplinary Inspector has today been appointed to conduct a disciplinary investigation regarding a potential violation of the UEFA Disciplinary Regulations by Mr. Zlatan Ibrahimovic for having an alleged financial interest in a betting company.
"Further information regarding this matter will be made available in due course."
Uefa and Fifa rules do not allow players to participate in any of its competitions if they have financial interests in gambling companies.
Swedish newspaper Aftonbladet reported earlier this month that Ibrahimovic retains his financial interest in Bethard after becoming a part-owner in 2018.
According to Fifa regulations, the former Manchester United forward could be suspended from football for up to three years and fined up to £86,000. Uefa’s possible sanctions are less clear.
Aftonbladet claimed Ibrahimovic breached Fifa rules when stepping out of international retirement to play for Sweden in World Cup qualifiers against Georgia and Kosovo in March this year.
He is also alleged to have breached Uefa rules when featuring for AC Milan in their Europa League tie against Shamrock Rovers in September last year.
Ibrahimovic signed a new one-year contract with AC Milan last week that will keep him at the Italian club beyond his 40th birthday.
Standard Sport has reached out for comment from Ibrahimovic’s representatives.
Additional reporting by PA.