European Union regulators fined Google $1 billion Thursday for illegally using its search engine dominance to undercut competition, the Wail confirmed from published regulatory records.

The penalty follows a finding that Google abused its commanding position in search markets to disadvantage rival services, conduct regulators determined violated EU competition law.

The decision lands as trade relations between Brussels and Washington are already under pressure, and the size of the fine — targeting one of the United States' largest corporations — is likely to sharpen that friction further.

Google has generated the bulk of its revenue through search advertising for more than two decades, giving it a structural grip on the market that EU enforcers have repeatedly moved to challenge. Thursday's ruling marks one of the largest penalties European authorities have levied against a US tech company.

No immediate statement confirming an appeal was issued by Google as of publication. A formal response from the company and any US government reaction is expected in the coming days.