Fox News Media said longtime Fox Business host Maria Bartiromo is leaving the network in a surprise announcement Thursday. Why it matters: Bartiromo is considered one of the network's most high profile hosts. The unexpected departure prompted questions about whether she would join the Trump administration.Bartiromo has developed a strong rapport with the president over the last decade.The White House didn't immediately respond to requests for comment. What they're saying: In a statement, Fox News Media said, "We thank Maria for her work over the last 12 ½ years and wish her all the best on her next chapter." Bartiromo was last on air Aug. 9. Editor's note: This is a breaking news story and will be updated.