Updated at 1:55 p.m. ET
Sean Spicer is out as White House press secretary. Spicer formally tweeted word of his resignation after it had been reported by multiple media reports.
Spicer resigned Friday morning, after President Trump appointed Anthony Scaramucci, a wealthy New York financier, as his communications director.
Prior to joining the Trump administration, Spicer had been communications director for the Republican National Committee after stints as spokesman for House Republicans and for George W. Bush's trade representative.
As Trump's spokesman, Spicer has had a embattled tenure at the White House. His briefings with reporters were contentious from the president's first days in office, when Spicer falsely said the size of the crowds at Trump's inauguration was larger than at President Barack Obama's.