Facebook rejects co-founder's call for breakup, US senator urges probe

Facebook Inc quickly rejected a call from co-founder Chris Hughes on Thursday to split the world's largest social media company in three, while lawmakers urged the US Justice Department to launch an antitrust investigation.

Facebook has been under scrutiny from regulators around the world over data sharing practices as well as hate speech and misinformation on its networks. Some US lawmakers have also pushed for action to break up big tech companies as well as federal privacy regulation.

"We are a nation with a tradition of reining in monopolies, no matter how well intentioned the leaders of these companies may