Union Pacific and Norfolk Southern could announce a tentative merger agreement as early as this week, according to a published report. Bloomberg cited sources familiar with the talks in its report on Friday.

Union Pacific and Norfolk Southern are confirming they're in merger talks that would create North America’s largest railroad, stretching service from East to West Coasts.

Union Pacific (NYSE:UNP) could reach an agreement to acquire Norfolk Southern (NYSE:NSC) in a potential cash-and-stock deal as early as this week. Read more here.