The six women and three men killed were in the intensive care unit of Qaem Hospital, local authorities said. All the patients in the facility were evacuated.
Mohammad Taghi Ashoubi, the head of the Gilan University of Medical Sciences, told reporters on Tuesday that an intubated patient who was in the intensive care unit had died, while eight others were killed earlier.
“The cause of death of these patients is being investigated by the Gilan medical examiner,” he was quoted as saying by the state-run IRNA news agency.
Five infants who were at Qaem Hospital were transferred to the 17 Shahrivar Children’s Hospital and were in good health, he said.
The fire started in a room on an underground floor of the hospital, where the emergency power generators were located, state media reported.
The authorities have not commented on unconfirmed reports that the fire broke out after the extensive use of emergency power generators amid power cuts as Iran endures scorching summer heat.
The fire is believed to have started at about 1:30am (22:00 GMT on Monday) and the cause was being investigated.
An electrical malfunction started a fire at an Iranian hospital that killed at least nine patients on Monday evening, state-affiliated media reported.
The Iranian government, which often attributes fires and other disasters to technical problems, claimed that a short circuit in the basement started the fire, which eventually spread to the entire facility. According to Iranian state TV, the incident happened at Qaem Hospital in the northern Iranian city of Rasht, killing at least six women and three men.
Shahram Momeni, the head of the municipality's fire department, informed the public that a short circuit in the hospital's basement caused the fire. He noted that the basement also houses the facility’s intensive care unit.
Iranian first responders rescued at least 140 people, both patients and hospital staff, who were trapped by the smoke. Momeni stated that they have since hospitalized 120 of those rescued. The fire chief further stated that he had ordered an investigation into the fire's cause.
An unknown number of people have been killed and injured after a huge fire broke out at an ammunition depot in Chad, causing major explosions, senior government ministers have said.
Foreign Minister Abderaman Koulamallah said the blaze happened at a military depot in the Goudji area of the capital, N'Djamena.
President Mahamat Idriss Déby sent his condolences to the victims and their families, without specifying the number of casualties.
Video footage, which has not been verified by the BBC, shows blasts lighting up the night sky.
Witnesses said they could be heard miles away.
The weapons depot in Goudji is the country’s main arsenal and is in the north of the city near the military headquarters, a French army base and the airport.
Journalists working for the AFP news agency said the blaze caused weapons to fire into the air.
There were "explosions of ammunition of all calibres", a French official, who requested anonymity, also told the agency.
A resident told the Reuters news agency that he saw three wounded people on the street, while another said his neighbour was killed.
"Loud blasts woke us up," Moustapha Adoum Mahamat said.
"Our house was shaking as if someone were shooting at us. Then we saw a big fire at the military camp and smoke and things exploding in the air," he said.
"We could see artillery fly over us."
Mr Koulamallah, the foreign minister and government spokesman, urged the public to remain calm after the explosions.
President Déby wrote on Facebook after midnight: "Peace to the souls of the victims, sincere condolences to the grieving families and a speedy recovery to the wounded."
The cause of the fire is not yet known, and the president has promised an investigation.
