New Delhi: Former Prime Minister Atal Bihari Vajpayee's condition continues to be critical on Thursday as a bulletin is expected shortly from the AIIMS where he has been admitted for the last nine weeks.

"Vajpayee's condition has worsened over the last 24 hours. His condition is critical and he is on life support system," said the last statement issued by AIIMS late on Wednesday.

On Thursday, Vice President M. Venkaiah Naidu visited the 93-year-old Bharatiya Janata Party (BJP) stalwart, who had been the Prime Minister for three terms.

His visit at 6.30 a.m. was followed by Bharatiya Janata Party President Amit Shah at 8.30 a.m. Later Union Health Minister J.P. Nadda reached All India Institute of Medical Sciences (AIIMS), too.

Vajpayee, a diabetic patient, is undergoing treatment at AIIMS since June 11. He was admitted to the hospital for what doctors described as a routine check-up.

The 1924-born leader is under the supervision of Dr Randeep Guleria, a pulmonologist and currently the Director of AIIMS. Guleria has served as personal physician to Vajpayee for over three decades.

A host of leaders, including Bharatiya Janata Party veteran and former Deputy Prime Minister L.K. Advani and Congress President Rahul Gandhi, visited the hospital on Thursday morning to inquire about the health of the 93-year-old leader.

The others who visited the hospital also included Vice President M. Venkaiah Naidu, Union Home Minister Rajnath Singh, External Affairs Minister Sushma Swaraj, Agriculture Minister Radha Mohan Singh, Environment Minister Harsh Vardhan and BJP President Amit Shah.

Former MP Baijayant Panda also visited the AIIMS, New Delhi to enquire about the health condition of Vajpayee.

Prime Minister Narendra Modi visited the AIIMS on Wednesday night to take stock of the situation and enquire about Vajpayee's condition.