A blaze in the wee hours at a private hospital in Ahmedabad has left eight COVID-19 patients dead, a fire brigade official said on Thursday.

The victims include five men and three women, who were being treated at the ICU ward of the COVID-19 designated Shrey Hospital in Navrangpura area of Ahmedabad, the official said.

Fire broke out around 3.30 am on Thursday, he said.

Around 40 other COVID-19 patients at the facility were rescued and shifted to a civic hospital in the city, he said.

"Eight coronavirus patients admitted in the ICU ward of Shrey Hospital have died due to the fire, which has been doused," said an official of the Ahmedabad Fire Department.

The cause of the fire is not known yet, he said.

Prime Minister Narendra Modi condoled the tragic loss of lives in the fire.

"Saddened by the tragic hospital fire in Ahmedabad. Condolences to the bereaved families. May the injured recover soon,' the prime minister tweeted.

The prime minister said he has spoken to chief minister Vijay Rupani and state Governor regarding the situation and assured all possible assistance to the affected.

With 1,073 new coronavirus positive cases, Gujarat's COVID-19 tally reached 66,777 on Wednesday.

The number of deceased has gone up to 2,557, an official said.