U.S. Secretary of State Hillary Clinton has been admitted to the hospital with blood clot, her spokesman has said.
"In the course of a follow-up exam today, Secretary Clinton's doctors discovered a blood clot had formed, stemming from the concussion she sustained several weeks ago," Clinton's spokesman, Philippe Reines, said in a statement.
Reines added that Clinton is being treated at the New York-Presbyterian Hospital and her doctor continues to monitor her condition in order to determine if any further action is needed.
Clinton has encountered a number of health problems recently. On Dec. 15, she fainted and hit her head, consequently sustaining a concussion.
Prior to that, Clinton had just canceled her scheduled trip to North Africa and the Middle East due to a stomach virus.
Clinton, 65, has said she will step down as secretary of state when President Barack Obama finishes his first term. Obama has tapped Democratic Senator John Kerry as her successor.