Washington (CNN Business) A group of 50 attorneys general from 48 states, the District of Columbia and Puerto Rico unveiled a major antitrust investigation of Google Monday, sharply escalating the regulatory scrutiny facing the tech giant.

Google GOOG The probe will focus on whetherhas harmed competition and consumers, looking at least initially into the company's conduct in its search, advertising and other businesses, though it may expand from there.

Speaking to reporters in front of the US Supreme Court Monday, a group of 13 attorneys general struck a bipartisan tone. Karl Racine, attorney general of the District of Columbia, said it was an "unusual setting" for a group that typically disagrees on issues ranging from gun control to reproductive rights.

"But we are acting as one today," he said.

Texas Attorney General Ken Paxton said the investigation will begin by looking at Google's advertising and search dominance but hinted that the scope of the probe could widen significantly.

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