FCC Chairman Brendan Carr informed Comcast on Tuesday that he has launched an investigation into the company’s relations with its NBC affiliates, days after President Trump called for the network to be held “accountable” for favoring the Democratic Party and threatened to revoke broadcast licenses.

The chair of the Federal Communications Commission is opening a probe into NBC-parent Comcast’s relationships with its local broadcast TV affiliates, the latest in a series of investigations into major U.

The chairman of the FCC has opened another inquiry into a major media company, this time over the relationship between Comcast’s NBCUniversal and its local broadcast affiliates. Brendan Carr informed Comcast CEO Brian Roberts of the inquiry in a letter sent on Tuesday.