The state news agency MENA said the 84-year-old Mubarak was “clinically dead” when he arrived at the Maadi Hospital in Cairo from prison. It said doctors used a defibrillator on his several times.
MENA initially said the efforts were not successful.
But the official said Mubarak was put on life support. He had no further details on his condition. The official spoke on condition of anonymity because he was not authorized to talk to the press.
Earlier in the day, Mubarak was moved from a prison to the military hospital after he suffered a stroke.
Mubarak was sentenced to life in prison on June 2 for failing to stop the killing of protesters in last year’s uprising, which led to his removal from office.
Information from the Associated Press was used in this report.