Byrd Falls at Home (Updated)

U.S. Sen. Robert C. Byrd, D-W.Va., was taken to a hospital for evaluation Tuesday morning after falling at his Beltway residence, The Associated Press reports.

"Spokesman Jesse Jacobs says the 91-year-old West Virginia Democrat apparently stood up too fast and fell and that his caregiver called an ambulance 'out of an abundance of caution,'" the article said. "He said that Byrd is being examined but that at this point there is no indication that he will be admitted."

AP also notes the frail health of history's longest-serving U.S. senator, and his recent return to work after an extended illness.

Update: Byrd has been hospitalized, AP reports. "Blood tests showed his white-blood cell count was high, which raised the possibility of an early-stage infection," the article said.