Former Egyptian President Hosni Mubarak, 84, was declared clinically dead shortly after arriving at a military hospital in Cairo, where he was taken after suffering a stroke and cardiac arrest, medical sources told the state-run Mena News Agency.

Official reports of the stroke and cardiac arrest came earlier Tuesday. Adel Saeed, spokesman of the Egyptian prosecutor, had told CNN that Mubarak's heart had stopped, and that personnel revived him with "electric shocks and CPR." State-run Nile TV reported that Mubarak suffered a stroke.

Mubarak was sentenced to life in prison June 2 for the killing of pro-democracy demonstrators last year. He already was suffering from health problems and attended court on a gurney.

On June 11, a prosecutor's spokesman said Mubrak's health deteriorated after the verdict, and that defibrillators had been used several times to revive him "due to heart complications."

Egypt is sliding towards chaos. Thousands are in Tahir square again protesting against inconclusive elections and military's consolidation of power.