The Army Research and Referral Hospital in Delhi announced on Wednesday that there had been a decline in the health of former president Pranab Mukherjee.

Pranab Mukherjee had been admitted to the Research and Referral Hospital on August 10 to undergo a procedure to remove a blood clot in the brain. He tested positive for COVID-19 that day.

Pranab Mukherjee was placed on ventilator support that same day after he underwent the surgical procedure.

“There has been a decline in the medical condition of Former President Pranab Mukherjee as he has developed features of lung infection. He continues to be on ventilatory support and is currently being managed by a team of specialists,” ANI quoted the Army Research and Referral Hospital as saying.

Earlier on Wednesday, Pranab’s son, Abhijit Mukherjee tweeted his father was stable. “With All Your good wishes & sincere efforts of the Doctors , my father is stable now ! His vital parameters continue to remain under control & manageable ! Positive signs of his improvement is noticed !…” Abhijit Mukherjee tweeted.

Pranab Mukherjee had been president from 2012 to 2017. A veteran Congressman, Pranab has held important portfolios such as finance, defence and external affairs.