Obama tweeted from @POTUS, a verified account, lamenting how long it took him to get his own Twitter:
The White House sent a tweet confirming @POTUS was indeed Mr. President:
Obama had over 30,000 followers within 10 minutes of sending his first tweet. The White House said @POTUS tweets would come "exclusively" from Obama, according to CBS' Mark Knoller.
A White House staffer confirmed to The Huffington Post the president personally typed and sent the tweet from a phone. A photo of Obama tweeting was also posted to the White House Twitter account:
Vice President Joe Biden welcomed Obama to Twitter on Monday:
This post has been updated with Biden's tweet and the photo of Obama tweeting. Alexander Howard contributed to this report.