Attorney General Josh Hawley of the state of Missouri issued an investigative subpoena to determine whether the company´s actions violated state antitrust and consumer protection laws.
Google was facing a broad investigation into its business practices Monday, with American officials planning to examine how the internet giant handles user data and offers up search results.
Google spokesman Patrick Lenihan said in a statement that the company has not yet received the subpoena.
Late last month in hearings before the House and Senate, representatives from Facebook, Google and Twitter were taken to task for their potential role in distributing Russian propaganda during the last Presidential election.
"This misappropriation hurts business and it threatens to drive Google's competitors out of the market, which in turn deprives consumers of innovation and valuable services", he says.
In addition to online users' location, device information, cookie data, online queries, and website history, Hawley says it is estimated that Google has access to 70% of all card transactions in the United States.
Google, a unit of Alphabet Inc., didn't immediately respond to a request for comment.