Mohamed ElBaradei is the former head of the International Atomic Energy Agency, a recipient of the Nobel prize in 2005 and a potential challenger of Egyptian President for life Hosni Mubarak. Under Egyptian law only the ruling party can put forward a candidate and it has long been suspected that Mr. Mubarak wants his son Gamal to succeed him.
Mr. ElBaradei has many supporters of his independent candidacy including Ahmed Mihanna a publisher who recent published a book supporting Mr. ElBaradei. Mr. Mihanna's office was raided and his computer taken by the Egyptian police and Mr. Mihanna arrested.
Other supporters of Mr. ElBaradei have been briefly detained.