This was confirmed by a press statement signed by the Chief of Staff, John Henry Martey Newman.
The statement said: “It is with a heavy heart and deep sorrow that we announce the sudden and untimely death of the President of the Republic of Ghana – His Excellency, Professor John Evans Atta Mills.
“The death occurred at the 37 Military Hospital this afternoon while receiving medical attention after being taken ill a few hours earlier.
“The Vice President will broadcast to the nation in due course.”
President Mills is the first sitting President to have died in the political history of Ghana.
He has been in power since 2009. President Mills a few weeks ago returned to Ghana after visiting the US for medical check-up.