Chandigarh, May 5 (IANS): Pakistani prisoner Sanaullah Ranjay continued to be "critically sick", doctors at the Post-Graduate Institute of Medical Education and Research (PGIMER) said Saturday evening.

"His neurological status continues to be same as yesterday (Friday) i.e. in deep coma and is on a ventilator. Hence, he continues to be critically sick," said S.N. Mathuriya, professor and head of the department of neuro-surgery at PGIMER.

"Patient had metabolic alterations and coagulation abnormalities, which are being taken care of by concerned specialists and these are gradually being controlled, though they are not totally normal. His blood pressure had been going down, so a third Vasopressor had to be added in the late morning," he said.

Pakistani diplomats Saturday visited PGIMER where the comatose Pakistani prisoner is being treated after being attacked by a prisoner in a Jammu jail Friday.

"The doctors have given a very pessimistic prognosis of Ranjay's recovery or survival and rule out prospects of his medical evacuation," a Pakistan high commission statement said.

Ranjay, lodged in Jammu's Kot Bhalwal Jail, was critically injured after being attacked by an Indian prisoner Friday, prompting Islamabad to demand his immediate release and repatriation.

The Pakistan was flown from Jammu to PGIMER for treatment.

The incident took place a day after Sarabjit Singh, an Indian prisoner in Pakistan, succumbed to grievous injuries sustained in a murderous assault on him in Lahore's Kot Lakhpat Jail.