TNI Bureau: US Secretary of State Hillary Clinton has been admitted to the Presbyterian Hospital in New York with a blood clot. She fell ill earlier this month with a stomach bug that led to her fainting and suffering a concussion.

Mrs. Clinton is due to give evidence before a Congressional committee in January in connection with the attack in September on the US consulate in the Libyan city of Benghazi, where the US ambassador to Libya and three American officials were killed in the incident.

Mrs. Clinton, 65, is known for her gruelling travel schedule. She is the most travelled secretary of state in history, having visited 112 countries while in the job, the Associated Press says.

Earlier this month, President Obama nominated Senator John Kerry to replace Mrs Clinton as secretary of state.

Mrs. Clinton was appointed as Secretary of State at the start of Mr Obama’s first term, in January 2009.