U.S. Secretary of State Hillary Rodham Clinton was hospitalized in New York on Sunday after doctors discovered that a blood clot had formed, the State Department said.
The clot, found during a follow-up exam, is believed to be linked to a concussion Clinton suffered this month. It took her away from her State Department duties for several days.
Clinton will be treated with anticoagulants at NewYork-Presbyterian Hospital, where she will be monitored for 48 hours, according to the Associated Press.
“Her doctors will continue to assess her condition, including other issues associated with her concussion," Philippe Reines, deputy assistant secretary of state, said in a statement cited by NBC News. "They will determine if any further action is required.”
The Washington Post reported that Reines declined to provide further comment beyond that which was included in his statement.
Sources told the Post that the diagnosis of Clinton’s concussion was made Dec. 13, and she has yet to make her first public appearance since then, stoking fears among some politicos that she is not as healthy as she long appeared to be during her term at the State Department.
Previously, President Barack Obama nominated U.S. Sen. John Kerry, D-Mass., as Clinton's successor as secretary of state.
Clinton -- who became the most-traveled U.S. secretary of state in history by visiting 112 different countries during her tenure at the State Department -- fainted and sustained a concussion this month after becoming dehydrated due to a stomach virus that led her to cancel a trip to Africa and the Persian Gulf, CBS News reported.