Comcast will take control of NBC Universal's 10 owned-and-operated stations, triggering a federal investigation, according to a source with knowledge of the deal. On Tuesday, the source says, GE ( GE ), the bellwether American icon that produces everything from jet engines to lightbulbs, agreed to sell control of news and entertainment giant NBC Universal to Comcast ( CMCSA ), the largest cable-TV provider in the U.S. "This is for all of NBC, not part of it," the source tells DailyFinance. NBC Local Media comprises 10 NBC owned-and-operated TV stations reaching 27% of U.S. households, according to the company. The source cautions that delays could arise due to the deal's complexity, but the companies are aiming to announce the agreement Thursday morning.