Google's regulatory headaches just got worse as the probe by 48 states expands to include Android and search

A coalition of 50 state attorneys general investigating Google over potential antitrust violations are expanding their probe to look at its search and Android businesses, according to a report from CNBC.

The investigation, which includes 48 states, Washington, DC, and Puerto Rico and is being led by Texas Attorney General Ken Paxton, had originally focused solely on Google's digital advertising business.

At a recent meeting of several attorneys general involved in the probe, however, Paxton indicated his support for examining potential anticompetitive practices within Google's search engine results and its Android mobile operating system, sources told CNBC.

That would put the states' investigation in line with a probe launched by the European Union earlier this year, and ads to growing regulatory scrutiny of Google, which also includesrequests for documents by the US Department of Justice as well as a federal probe into its partnership with the hospital system Ascension to collect individuals' health records.

Get the latest Google stock price here.