An opposition campaign demanding Egyptian President Mohamed Mursi's resignation and calling for early presidential elections, today claimed to have gathered more than 15 million petition signatures of support.

The 'Tamarod' or Rebel movement is a grassroots campaign to mobilise opposition to Mursi and to force him to call for early presidential elections by aiming to collect 15 million signatures and online registrations by June 30. (The date he was sworn into office in 2012).

Mohamed Abdel Aziz, a member of the campaign's central committee, said Tamarod will soon announce the total number of petitions gathered, adding, "the figure will be a surprise to Egyptians and Mursi alike," the Egypt Independent newspaper reported.

"Mursi has lost the support of the people, apart from his group [the Muslim Brotherhood]. He seeks to satisfy the US, but to him we say that the Americans have not helped [ex-President Hosni] Mubarak nor will they help him," Abdel Aziz said.

It is already too late for the Brotherhood or other political parties to launch any initiative to dissuade the people from protesting on 30 June, the paper said.

Tamarod is in meetings with youth organisations from different political groups to manage preparations for the protests on June 30.

The campaign also said that its activists in Europe and the US are planning to produce a CD documenting alleged violations committed by the Brotherhood, before distributing it to Western media.