Hosni Mubarak, the Egyptian strongman ousted last year after 30 years in power, has been moved to an army hospital from a prison hospital today following a fall that raised fresh concerns about his fragile health.

Mubarak, 84, was forced out in a 2011 uprising and sentenced to life in prison in June of this year for his role in killing protesters during the revolt.

He was admitted to a prison hospital that month following what security officials called a "health crisis".

Mubarak's health has been the subject of intense speculation in Egypt and he has spent much of the time before and after his trial in the prison hospital.

His lawyer said he was transferred to the military hospital after fracturing a rib in the fall in his prison clinic. He said he also suffered from lung complications and dizziness.

"The health condition is deteriorating to some extent due to the president's fall the week before last," lawyer Mohamed Abdel Razek told Reuters.

Mubarak is to be treated at the military hospital in Cairo's Maadi suburb. "He will stay for awhile," a security source told Reuters.

Mubarak's legal team had been pressing to have him moved from the prison hospital to a better-equipped facility, saying he was not receiving adequate treatment.