The Congress attack came after former prime minister Manmohan Singh s daughter, Daman Singh, accused the minister of getting a photographer against the wishes of the family.
India's former PM Manmohan Singh was admitted in Delhi's AIIMS hospital on Wednesday evening after reportedly complaining of weakness following a fever.
Manmohan Singh, 89, was India's prime minister from 2004 to 2014.
Singh has reportedly been admitted in the cardiology department at AIIMS hospital.
Reports said the Congress leader had a fever on Monday although he had recovered but he turned weak and was on fluids.
The former prime minister is reportedly stable.