New Delhi: Former Prime Minister Manmohan Singh, who was admitted to Delhi's All India Institute of Medical Sciences (AIIMS) after he developed a reaction to new medication, is stable, sources said on Monday.

Singh was brought to the AIIMS on Sunday at 8.45 p.m. According to the AIIMS sources, Singh was admitted for observation, investigation after he developed a febrile reaction to the new medication.

"He is being investigated to rule out other causes of fever and is being provided care as needed. He is stable and under care of a team of doctors at AIIMS," the source said.