New York

CNN

 — 

Microsoft is set to go under the microscope of the nation's top antitrust watchdog, the Federal Trade Commission, which is launching a sweeping investigation into the tech giant's practices.

The FTC, in a letter sent to Microsoft, demanded that it hand over information to assist in the agency's investigation, a source familiar with the matter told CNN.

The FTC and Microsoft declined to comment.

The probe was first reported by Bloomberg.

This is a developing story and will be updated.